pubmed:affiliation |
Center for Evaluation and Sociomedical Research, Graduate School of Public Health, University of Puerto Rico, Medical Sciences Campus, P.O. Box 365067, San Juan, PR. mildred.vera@upr.edu
|
pubmed:publicationType |
Journal Article,
Comparative Study,
Randomized Controlled Trial,
Research Support, Non-U.S. Gov't,
Multicenter Study,
Research Support, N.I.H., Extramural
|