By Padgett Diana Irene   Selwyn Beatrice Jo   Kelder Steven Harold   in Revista Panamericana de Salud Pública/Pan American Journal of Public Health

ISSN:1020-4989|4|2|87-93

Pan American Health Organization (PAHO)‎(1998)‎

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By Rasu Rafia   Rianon Nahid   Shahidullah Sheikh   Faisel Abu   Selwyn Beatrice   in Health Care For Women International

ISSN:1096-4665|32|3|177-189

Routledge Ltd‎(2011)‎

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Principles of Epidemiology‎

By Roht   Lewis H.;Selwyn   Beatrice J.;Holguin   Alfonso H.  

ISBN:9781483276342

Elsevier Science‎(2013)‎

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