Isfahan COVID cohort study: Rationale, methodology, and initial results oleh Nizal Sarrafzadegan, Noushin Mohammadifard, Shaghayegh Haghjooy Javanmard, Fahimeh Haghighatdoost, Fatemeh Nouri, Mahshid Ahmadian, Maryam Nasirian, Maedeh Sayyah, Jamshid Najafian, Mohammadreza Shafiei, Hassan Alikhasi, Sahel Javanbakht, Farzaneh Nilforoushzadeh, Fahimeh Bagheri, Shahla Shahidi, Mostafa Rezaei, Kamal Heidari, Behrouz Keleidari, Tahereh Changiz