Epidemiologic studies and clinical trials in chronic diseases :
Epidemiologic studies and clinical trials in chronic diseases : proceedings of a symposium held during the Eleventh Meeting of the PAHO advisory Committee on Medical Research, June 20, 1972.
- Washington, D.C. : Pan American Health Organization, 1972.
- 106 p.
- Scientific publication (Pan American Health Organization) ; no. 257 .
eng.
9275112576
Chronic disease--epidemiology--congresses.
Clinical trials--congresses.
WT 500
eng.
9275112576
Chronic disease--epidemiology--congresses.
Clinical trials--congresses.
WT 500