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;

Clinical characteristics and gaps in palliative care among tracheostomized children: a retrospective observational study Luziane Lais Sabino Silva Luna; Sheyla Suelle dos Santos Levy; Luciana Santana Lima; Maria do Carmo Menezes Bezerra Duarte;

Respiratory mechanic instability in evaluating the effectiveness of adenotonsillectomy for pediatric obstructive sleep apnea Ji Ho Choi; Yeji Lee; Sungkyoung Shin; Tae Kyoung Ha; Se A. Lee;