TY  - RPRT
TI  - Epidemiology: the basic, clinical, essential science.
AU  - J Last
PY  - 1996
DO  - 10.1016/s1047-2797(96)00099-3
UR  - https://pubmed.ncbi.nlm.nih.gov/8915465/
ID  - 8915465
ER  -