Mental health difficulties and related factors in Chinese children and adolescents during the COVID-19 pandemic: a cross-sectional study Tongtong Li; Chunhao Li; Guoquan Zhang; Naijian Zhang; Jing Li; Qinghan Ren; Wen Li; Zhenshu Li; Guowei Huang; Jing Yan;

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 MaraGonçalves de Oliveira Azevedo;

Consequences of the Covid-19 pandemic in children and adolescents with attention deficit hyperactivity disorder - a systematic review Janise Dal-Pai; Carolina Boeira Soares; Viviane Cardoso de Fraga; Aline Porto; Gustav Peter Foerster; Magda Lahorgue Nunes;