1) National Organization for Rare Disorders (NORD) и The Genetic and Rare Diseases Information Center (GARD)
2) London Dysmorphology Database (LDDB) и London Neurogenetics Database (LNDB)
3) EUROCAT Network и International Clearinghouse Birth Defects Surveillance Research (ICBDSR) (+)
4) Pictures of Standard Syndromes and Undiagnosed Malformations (POSSUM) и Online Mendelian Inheritance in Man (OMIM)