In-hospital mortality in SARS-CoV-2 stratified by serum 25-hydroxy-vitamin D levels: A retrospective study

Mohammed Al-Jarallah, Rajesh Rajan^*, Raja Dashti, Ahmad Al Saber, Jiazhu Pan, Kobalava D. Zhanna, Hassan Abdelnaby, Wael Aboelhassan, Farah Almutairi, Mohammed Abdullah, Naser Alotaibi, Mohammad Al Saleh, Noor Al Nasrallah, Bader Al-Bader, Haya Malhas, Maryam Ramadhan, Mahdy Hamza, Peter A. Brady, Ibrahim Al-Zakwani, Moudhi Alroomi