TY  - RPRT
TI  - Data bases for variations research.
AU  - J E Paul
AU  - K A Weis
AU  - R A Epstein
PY  - 1993
DO  - 10.1097/00005650-199305001-00016
UR  - https://pubmed.ncbi.nlm.nih.gov/8492595/
ID  - 8492595
ER  -