ABC

AMERICA NORTE: http://jama.ama-assn.org/
AUSTRALIA:http://www.mja.com.au/
http://www.aushealthcare.com.au/links/index.asp?
ANALES DE MEDICINA INTERNA: http://www.annals.org/
ARCHIVOS DE MEDICINA INTERNA: http://archinte.ama-assn.org/
BRITISH: http://bmj.bmjjournals.com/
CANADA: http://www.cmaj.ca/
http://www.cimfweb.org/