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r e v a s s o c m e d b r a s . 2 0 1 3;5 9(2):100 Revista da ASSOCIAÇÃO MÉDICA BRASILEIRA w w w . r a m b . o r g . b rdoi:10.1016/s2255-4823(13)70437-5 fatcat:ax46n66fmrcpnnes4bu6tsjhjy