anchor.diff:  
   Welter D et al, 2014 link:https://academic.oup.com/nar/article/42/D1/D1001/1062755[The NHGRI GWAS Catalog, a curated resource of SNP-trait associations]. Nucleic Acids Research, Vol. 42 (Database issue): D1001-D1006.
   
  -Hindorff LA, et al 2009 link:http://www.genome.gov/Pages/About/OD/NewsAndFeatures/PNASGWASOnlineCatalog.pdf[Potential etiologic and functional implications of genome-wide association loci for human diseases and traits]. Proc. Natl. Acad. Sci. USA, 2009, 106, 9362–9367
  +Hindorff LA, et al 2009 link:http://www.genome.gov/Pages/About/OD/NewsAndFeatures/PNASGWASOnlineCatalog.pdf[Potential etiologic and functional implications of genome-wide association loci for human diseases and traits]. Proc. Natl. Acad. Sci. USA, 2009, 106, 9362–9367.
   
   ==== Other background reading
   
  
positive.code: |Knowledge base in human genome epidemiology, including information on population prevalence of genetic variants, gene-disease associations, gene-gene and gene- environment interactions
  
  |http://www.ncbi.nlm.nih.gov/gap/PheGenIUCSC[Phenotype-Genotype Integrator]
  |Merges GWAS Catalog Data with other NCBI databases to facilitate prioritization of GWAS hits for follow-up
  
  |http://targetvalidation.org[OpenTargets platform]
  |Platform for the identification of drug targets using multiple data types including GWAS
  
negative.code: |Database of human single nucleotide polymorphisms
  
  |https://www.ncbi.nlm.nih.gov/[National Centre for Biotechnology Information]
  |Provides wide range of resources including Entrez gene, GenBank, PubMed and ClinVar
  
  |http://geneticassociationdb.nih.gov/[Genetic Association Database]
  |Database of genetic association data from complex diseases and disorders, retired in 2014
  