Espejo, Tanguy, Lize Kiakouama, Reto Etter, and Sophie Condrau. 2025. “Sudden-Onset Platypnea-Orthodeoxia Syndrome in a Patient With Lung Adenocarcinoma and COVID-19 Without a Patent Foramen Ovale”. European Journal of Case Reports in Internal Medicine 12 (11). https://doi.org/10.12890/2025_005732.