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Contraception|July 1, 1979
A randomized double blind study of two oral contraceptivesH Sanhueza, I Sivin, S Kumar, et al.
Revista Medica De Chile|July 1, 1993
[Comparative study of famotidine vs ranitidine in critically ill patients in mechanical ventilation]V Vargas, J Castro, F del Solar, et al.
Revista Medica De Chile|February 1, 1989
[Infectious endocarditis: clinical and echocardiographic initial follow-up]M Oyonarte, A Estévez, C Akel, et al.
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