Does the relationship between prenatal care and birth weight vary by oral clefts? Evidence using South American and U.S. samples

Kwame A. Nyarko, BA, Doctoral Candidate, Department of Health Management and Policy, University of Iowa Jorge Lopez-Camelo, PhD, CEMIC: Centro de Educación Médica e Investigación Clínica; INAGEMP (Instituto Nacional de Genética Médica Populacional) and ECLAMC (Estudio Colaborativo Latino Americano de Malformaciones Congénitas), at Laboratório de Epidemiologia de Malformações Congênitas, Instituto Multidisciplinario de Biologia Celular – IMBICE-CICPBA-CONICET Eduardo E Castilla, MD, PhD, and INAGEMP (Instituto Nacional de Genética Médica Populacional) and ECLAMC (Estudio Colaborativo Latino Americano de Malformaciones Congénitas), at Laboratório de Epidemiologia de Malformações Congênitas, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil, and CEMIC: Centro de Educación Médica e Investigación Clínica George L. Wehby, PhD Associate Professor, Department of Health Management and Policy, College of Public Health, University of Iowa, 105 River Street, N248 CPHB, Iowa City, IA 52242, 319 384 3814 phone, 319 384 4371 fax, [email protected]