Idiopathic musculoskeletal pain, musculoskeletal pain syndromes, and use of electronic devices in adolescents with asthma Mariana Machado Forti Nastri; Benito Lourenço; Ligia Bruni Queiroz; Luiz Eduardo Vargas da Silva; Daniela Mencaroni Rodrigues Lourenço; Ana Paula Beltran Moschione Castro; Clovis Artur Silva; Antonio Carlos Pastorino;

Physical activity and quality of life of children and adolescents with juvenile idiopathic arthritis, juvenile systemic lupus erythematosus and juvenile dermatomyositis during the COVID-19 pandemic Renata Soares; Fabiana de Carvalho Silva; Jade Dib Fernandez; Melissa Mariti Fraga; Maria Teresa Terreri; Claudio Arnaldo Len;

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;