Factors associated with parental knowledge, attitude, and practice regarding childhood constipation: a cross-sectional study - Dumrisilp, Termpong; Inploy, Cattaleeya; Juttijudata, Mananut; Pawasut, Natwara; Sangsuwanwipa, Thananpat (Pediatric Medicine; Vol 9 (February 28, 2026): Pediatric Medicine, 2025)