1.
Tampa; Organización Panamericana de la Salud; 1999. [250] p. ilus.
Monography
in Spanish
| LILACS
| ID: lil-380276
Subject(s)
Case-Control Studies , Clinical Trials as Topic , Cohort Studies , Epidemiologic Methods , Epidemiology , Latin America
2.
Tampa; Organización Panamericana de la Salud; 1999. 201 p. ilus.
Monography
in Spanish
| LILACS
| ID: lil-380279