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Malaria Journal   

Medical Education Online   

Medical Immunology   

Medical Journal Armed Forces India

The Medical Journal of Australia

Medical Science Monitor

Medicina (Kaunas)

Medicina Legal de Costa Rica

Medicina Oral, Patologia Oral y Cirugia Bucal

Medifam: revista de medicina familiar y comunitaria

Medscape General Medicine

Memorias do Instituto Oswaldo Cruz   

Microbiology and Immunology

Middle East Fertility Society Journal

Minnesota Medicine

MMWR: Morbidity & Mortality Weekly Report

Molecular Cancer   

Molecular Pain   

Molecular Systems Biology

Molecular Vision

The Mount Sinai Journal of Medicine

MPR-online, Methods of Psychological Research