Prevalence and indoor environment risk factors of otitis among preschool children in Urumqi, China Jian Yao; Haonan Shi; Junwen Lu; Xiaolan Wang; Daming Xie; Xiaowei Wang; Guangsheng Wan; Fuye Li; Tingting Wang;

Answer to letter to the editor ¿Further studies are still necessary in the relationship between indoor environment and otitis media¿ Tingting Wang;

Allergic rhinitis and sleep disorders in children ¿ coexistence and reciprocal interactions Cláudio D'Elia; David Gozal; Oliviero Bruni; Ekaterini Goudouris; Miguel Meira e Cruz;