when , in 2007 , it became clear that the journal community genetics ( karger ) would change its name and focus to public health genomics ( ten kate 2008a , b ; karger 2008 ) , the question arose whether this would be the end of community genetics as a separate field of science and practice . would community genetics disappear from our vocabulary , or would its concept and name be able to attract a sufficient number of  followers  for a viable continued existence ? to obtain an indication of the answer to this question , it was decided ( by ltk ) to assemble individual researchers and others into an e - mail network with a regular newsletter containing references to recent publications and messages from and for its members , as well as information on upcoming meetings relevant to the field . to ensure enduring engagement of the members in the network , the newsletter should only be available to them and not be publicly accessible . the 50th newsletter of the network appeared on august 1 , 2010 and was sent to 858 members in 70 countries . in this paper we describe the growth and origin of the membership , and the growth and origin of the references to papers published by the members of the network and listed in the newsletter . members were recruited one by one by e - mail . attached to the invitation was a description of the aim of the network and its service to the members ( see box  1 ) , and a specimen of the most recent newsletter . recruitment started in may 2007 by inviting persons known to be interested in community genetics , followed by inviting corresponding authors of previous papers published in the journal community genetics , as their e - mail addresses were publicly available on their printed papers . as a next step , a number of relevant journals were screened regularly for papers on subjects within the scope of community genetics , and their corresponding authors were subsequently invited to become a member . after a while , this approach was replaced by weekly pubcrawler searches in pubmed and genbank on items within the scope of community genetics , such as genetic screening , genetic education , genetics in primary care , and so on ( see http://pubcrawler.gen.tcd.ie/ ) . from the weekly lists of references , authors of papers within the community genetics domain were invited when an e - mail address could be found . table  1specimen of the original attachment accompanying invitations to become a memberthe definition of community genetics shown here is replaced presently by a more recent definition ( ten kate et al . present definition : community genetics is the art and science of responsible and realistic applications of health and disease - related genetics and genomics knowledge and technology in human populations and communities to the benefit of individuals therein . community genetics is multi- , inter- , and transdisciplinary and aims to maximize benefits while minimizing the risk of harm , respecting the autonomy of individuals and ensuring equity specimen of the original attachment accompanying invitations to become a member the definition of community genetics shown here is replaced presently by a more recent definition ( ten kate et al . present definition : community genetics is the art and science of responsible and realistic applications of health and disease - related genetics and genomics knowledge and technology in human populations and communities to the benefit of individuals therein . community genetics is multi- , inter- , and transdisciplinary and aims to maximize benefits while minimizing the risk of harm , respecting the autonomy of individuals and ensuring equity between may 2007 and july 2010 , 1,388 first invitations were sent , out of which 8% were undeliverable , leading to 395 ( 31% ) positive answers and a few expressing regret . the great majority of the nonresponders ( 811 ) were approached a second time , generally 1  month after the first invitation . another 207 people accepted ( 26% after subtracting 0.7% undeliverable mails ) . in this way a total of 602 members were recruited by personal invitation . another 256 members were the result of spontaneous requests by people who had heard from others about the newsletter and by suggestions of members to include other people of their team . over the first 3  years of the network , the number of members increased gradually with a constant flow ( fig .  1 ) . monthly , an average of 22 ( 8 ; range 441 ) members joined the network . members originated from 70 countries , mainly from ( north ) america and europe ( table  1 ) . half of the members came from three countries ( usa , uk , and the netherlands ) . the disproportionate high number of members for the netherlands ( 85)a country with only 16 million inhabitants  is explained by the existence since 2001 of a national association for community genetics and public health genomics . low and middle - income countries are , not unexpectedly , underrepresented : fewer resources , fewer researchers , fewer publications , and less visibility of those qualifying for membership . recruitment started 3  months before publication of the first issue of the newslettertable  2number of members by continent and country , august 2010 ( countries with less than five members are grouped together)continentcountrynumbercontinentcountrynumberamerica329asia115usa237india21canada68israel19brazil15iran95 other countries9saudi arabia6turkey6europe329japan5uk103lebanon5netherlands85pakistan5italy2317 other countries39belgium13france13australia / pacific65germany12australia61greece111 other country4norway7portugal7africa20spain7south africa8sweden77 other countries12denmark615 other countries35 evolution of membership of the community genetics network . recruitment started 3  months before publication of the first issue of the newsletter number of members by continent and country , august 2010 ( countries with less than five members are grouped together ) members were invited , originally , to send references to their recent papers ( less than 3  months old ) , in the community genetics domain , written in the english language , and listed in pubmed , to the then coordinator ( ltk ) of the network who included them with a hyperlink to pubmed in the upcoming newsletter . so , within a year , the ascertainment of references to papers of the members was done by a weekly search through pubmed on author s name ( family name and first initial ) . as different authors may have the same family name and first initial , the weekly results have to be checked by comparing the information on first name and affiliation in the paper and the network database . the number of references listed in the newsletter increased gradually ( fig .  2 ) . originally , the newsletter was published once a month , but given the continuous increase in the number of references , it was decided to publish the newsletter twice a month from issue 22 , may 2009 , onward ( with the exception of the yearly holiday season ) . after 3  years , the number of cited references exceeded 90 papers a month . the way the references were selected does not allow speculating on an eventual increase in the number of papers published within the field of community genetics . twenty two were cited in more than one issue ( duplicates , leading to 1,511 citations ) number of cited references per issue of the newsletter of the community genetics network . twenty two were cited in more than one issue ( duplicates , leading to 1,511 citations ) including the 50th newsletter , references to a total of 1,489 papers by members were recorded . these 1,489 papers were published in a wide range of journals , 485 in total ( tables  2 and 3 ) . a total of 278 ( 57.3% ) journals contained only one paper , 82 ( 16.9% ) revealed two papers , 47 ( 9.7% ) three papers , and so on . the top 10 journals ( table  3 ) , representing 2.1% of all journals with papers from our members , contained 445 ( 29.5% ) of all the papers cited . the contribution of the journal community genetics ( karger ) was restricted to the first period of the newsletter . for the second period ( issues 2650 ) , nature genetics with 16 papers would have taken the empty place in a top 10 restricted to this period . there were already nine references to papers published in the journal of community genetics ( springer ; first issue appearing march 2010 ) . table  3distribution of number of papers of members by journal in which they were published ( excluding the top 10 journals listed in table  4)number of papers by journaljournalspapersnumberpercentage 
 numberpercentage 
 127857.327818.428216.916410.93479.71419.34193.9765.05132.7654.3640.8241.6791.9634.2861.2483.2940.8362.41010.2100.71130.6332.21210.2120.81330.6392.61420.4281.91510.2151.01720.4342.3total47597.91,06670.5 
 percentage of all journals ( including top 10 ) 
 percentage of papers in all journals ( including top 10)table  4top 10 journals with papers of network membersname of journalnumber papersissues 1 to 25issues 2650total% total 
 genetics in medicine 
 3438724.8 
 journal of genetic counseling 
 3728654.3 
 genetic testing and molecular biomarkers 
 3725624.1 
 european journal of human genetics 
 2428523.4 
 public health genomics 
 1635513.4 
 american journal of medical genetics a 
 2218402.6 
 prenatal diagnosis 
 1516312.1 
 clinical genetics 
 820281.9 
 community genetics 
 23231.5 
 familial cancer 
 813211.4total22422144529.5 distribution of number of papers of members by journal in which they were published ( excluding the top 10 journals listed in table  4 ) 
 percentage of all journals ( including top 10 ) 
 percentage of papers in all journals ( including top 10 ) top 10 journals with papers of network members the topics of the papers covered a wide range of subjects . references to papers on a related subject were therefore clustered in each newsletter under one of the 71 headings used during that period , such as  genetic screening  or  psychosocial issues ,  enabling readers to focus on papers of their interest . the 10 headings with the largest number of references for each year led to a list of 18 headings , comprising 73% of all the papers ( fig . these headings listed 74 ( 63% ) , 314 ( 71% ) , and 734 ( 76% ) of the papers in the first , second , and third year , respectively . there is a remarkable increase in papers placed under the headings  genetic disorders  ( a ) ,  specific disorders or mutations in specific communities  ( b ) , and  complex disorders  ( d ) , while the heading  genetics education and literacy 3frequency distribution of papers by heading and year of publication of the newsletter ( restricted to the 10 headings with the largest number of references in each year ) . percentage was calculated on the total number of cited references for each year ( white , dark gray and light gray bars ) or in total ( black bars ) . explanation of symbols : a genetic disorders , b specific disorders or mutations in specific communities , c genetic screening , d complex conditions , e congenital disorders , f prenatal screening and testing , g genetic testing , h miscellaneous , i family history , j population history , k genetic counseling , l genetics education and literacy , m psychological issues in hereditary cancer , n patient perspective , o bio - banks , p testing minor , q genetic services , r susceptibility genes and testing frequency distribution of papers by heading and year of publication of the newsletter ( restricted to the 10 headings with the largest number of references in each year ) . percentage was calculated on the total number of cited references for each year ( white , dark gray and light gray bars ) or in total ( black bars ) . explanation of symbols : a genetic disorders , b specific disorders or mutations in specific communities , c genetic screening , d complex conditions , e congenital disorders , f prenatal screening and testing , g genetic testing , h miscellaneous , i family history , j population history , k genetic counseling , l genetics education and literacy , m psychological issues in hereditary cancer , n patient perspective , o bio - banks , p testing minor , q genetic services , r susceptibility genes and testing the original question whether community genetics concept and name would be able to attract a sufficient number of  followers  for a viable continued existence can be answered positively , at least when a so - named service is offered free of charge . the recruitment of members and the production of the newsletter were done by the first author who is officially retired . since november 2009 preparation and sending of the newsletter are transferred to the second author who is on the pay list of the ecogene-21 project at chicoutimi , canada . at the time of submission of the revised version of this paper , the e - mail address commgennet@gmail.com is still valid for readers who want to contact us . apart from the establishment of the community genetics network and its newsletter , three more relevant developments took place . in 2010 , the first issues of the journal of community genetics appeared ( schmidtke and ten kate 2010 ) , published by springer published ( ten kate et al . 2010 ) , and the ecogene-21 team took steps to establish an international society of community genetics and genomics . finally , this case report shows that it is not too difficult to establish an international multidisciplinary e - mail network and a regular newsletter based on scientific and other output if its members . our model may serve as an example for others who want to bring together those sharing a common interest .
when in 2007 it became clear that the karger journal community genetics would change its name and scope , the first author started to establish an international , multidisciplinary e - mail network and a newsletter with papers authored by the members of the network . 
 this paper reports on the first 3  years of the network . at the end of the 3-year period 
 , there were 858 members , 50 newsletters had appeared , and almost 1,500 different papers from 458 journals had been cited . 
 this model may serve as an example for others who want to bring together those sharing a common interest .