| AMERICAN JOURNAL OF EPIDEMIOLOGY |
|
| DTB DRUG AND THERAPEUTICS BULLETIN |
|
EBSCO HOST
|
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| EVIDENCE-BASED MEDICINE |
|
HINARI
|
|
| INFORME ACADEMICO |
|
| ISI WEB OF KNOWLEDGE |
|
| JSTOR |
|
| OVID |
|
| REVISTA BMJ BRITISH MEDICAL JOURNAL |
|
| REVISTA COLOMBIA MÉDICA |
|
| REVISTA JAMA . THE JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION |
|
