Cesarean section is correlated with increased body mass index in childhood in two brazilian birth cohort studies - Goldani, Helena A. S.; Gutierrez, Manoel R. P.; Bettiol, Heloisa; Silva, Antonio A. M.; Cardoso, Viviane Cunha; Barbieri, Manuela Ramos; Goldani, Marcelo Z.; Barbieri, Marco Antonio (Annual Meeting of the Pediatric Academic Societies, 2012)