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Hoch AL, Pinheiro FP, Roberts DR, Gomes ML.Hoch AL, et al.Bull Pan Am Health Organ. 1987;21(1):55-61.Bull Pan Am Health Organ. 1987.PMID: 3607353No abstract available.
LeDuc JW, Hoch AL, Pinheiro FP, da Rosa AP.LeDuc JW, et al. Among authors: hoch al.Bull Pan Am Health Organ. 1981;15(2):97-103.Bull Pan Am Health Organ. 1981.PMID: 7326505No abstract available.