Comparison of physical fitness between healthy and mild-to-moderate asthmatic children with exercise symptoms: A cross-sectional study - Sanz-Santiago V; Diez-Vega I; Donadio MVF; Schiwe D; Lopez-Nuevo C; Vendrusculo FM; Santana-Sosa E; Burgos S; Escribano-Ceruelo E; Villa-Asensi JR; Perez-Ruiz M (Pediatric Pulmonology, 2021)