Basic Reproduction Number (R0), Doubling Time, and Daily Growth Rate of the COVID-19 Epidemic: An Echological Study oleh Roya Karimi, Mehrdad Farrokhi, Neda Izadi, Hadis Ghajari, Fatemeh Khosravi Shadmani, Farid Najafi, Ebrahim Shakiba, Manoochehr Karami, Masoud Shojaeian, Ghobad Moradi, Ebrahim ghaderi, Elham Nouri, Ali Ahmadi, Abdollah Mohammadian Hafshejani, Majid Sartipi, Alireza Zali, Ayad Bahadori Monfared, Raha Davatgar, Seyed Saeed Hashemi Nazari