Singh, Komal, Harshit Kadnur, Animesh Ray, Puneet Khanna, Akhil Singh, Naveet Wig, and Anjan Trikha. “Platypnea-Orthodeoxia in a Patient With Severe COVID-19 Pneumonia”. Monaldi Archives for Chest Disease 90, no. 4 (December 23, 2020). Accessed November 23, 2024. https://www.monaldi-archives.org/macd/article/view/1609.