Espejo T, Kiakouama L, Etter R, Condrau S. Sudden-onset platypnea-orthodeoxia syndrome in a patient with lung adenocarcinoma and COVID-19 without a patent foramen ovale. EJCRIM [Internet]. 2025 Sep. 30 [cited 2026 Nov. 3];12(11). Available from: https://ejcrim.com/index.php/ejcrim/article/view/5732