Life‐Threatening Acute Hypoxemic Respiratory Failure Caused by Complete Left Lung Collapse Secondary to Mucus Plug Obstruction in a Toddler: A Case Report. - Heng, Menghak; Chheang, Chhayhout; Chit, Sophou; Kou, Bunleng; Ton, Kimhun; Ean, Sarin; Khor, Chheang; Hem, Borin; Srey, Vibopha; Phy, Sopheak; Leang, Heng; Chhar, Bunpaul; et al. (Case Reports in Pulmonology, 2026)