RESULTS	The percent of students scoring 5 in the questionnaire are as follows : objectives met - 100 % for all groups ; knowledge improved : group I - 91 % , group II - 96 % , group III - 92 % ; skills improved : group I - 9 % , group II - 83 % , group III - 96 % ; overall satisfaction : group I - 91 % , group II - 92 % , group III - 92 % ; should be mandatory : group I - 32 % , group II - 96 % , group III - 100 % .\