Low back pain in adolescents and association with sociodemographic factors, electronic devices, physical activity and mental health Thiago Paulo Frascareli Bento; Guilherme Porfirio Cornelio; Priscila de Oliveira Perrucini; Sandra Fiorelli Almeida Penteado Simeão; Marta Helena Souza de Conti; Alberto de Vitta;

Exclusive breastfeeding modifies the association between maternal education and child development: a cross-sectional study nested in a cohort Luiza Alves Ford; Gabriela Buccini; Amanda Castelo Saragosa; Isadora de Araújo Martins; Janaína Matos Moreira; Stela Maris Aguiar Lemos; Claudia Regina Lindgren Alves; Vivian Mara Gonçalves de Oliveira Azevedo;

Factors associated with developmental delay in late preterm infants: the BRISA cohort Paulo Ricardo Higassiaraguti Rocha; Gabriela Pap da Silva; Otávio Augusto Gratão; Marco Antonio Barbieri; Viviane Cunha Cardoso; Maria da Conceição Pereira Saraiva; Heloisa Bettiol;