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1. Risk Factors Associated with Severity and Death from COVID-19 in Iran: A Systematic Review and Meta-Analysis Study

- Ahmad Mehri

- Sahar Sotoodeh Ghorbani

- Kosar Farhadi-Babadi

- Elham Rahimi

- Zahra Barati

- Niloufar Taherpour

- Neda Izadi

- Fatemeh Shahbazi

- Yaser Mokhayeri

- Arash Seifi

- Saeid Fallah

- Rezvan Feyzi

- Koorosh Etemed

- Seyed Saeed Hashemi Nazari

2. Chronic Diseases as a Predictor for Severity and Mortality of COVID-19: A Systematic Review With Cumulative Meta-Analysis

- JinSong Geng

- XiaoLan Yu

- HaiNi Bao

- Zhe Feng

- XiaoYu Yuan

- JiaYing Zhang

- XiaoWei Chen

- YaLan Chen

- ChengLong Li

- Hao Yu