TY  - RPRT
TI  - Problems encountered in high-level research in developing countries.
AU  - M Selman
AU  - R Pérez-Padilla
AU  - A Pardo
PY  - 1998
DO  - 10.1378/chest.114.2.610
UR  - https://pubmed.ncbi.nlm.nih.gov/9726752/
ID  - 9726752
ER  -