Comorbidities and severity of coronavirus disease 2019 patients

From the Public Health and Community Medicine (Radwan), Faculty of Medicine, Tanta University, Tanta, Egypt; from the Primary Health Care (Radwan, Mahmoud, Alfaifi, Alabdulkareem), Ministry of Health and from the College of Medicine (Alabdulkareem), Al-Imam Mohammad Ibn Saud Islamic University, Riyadh, Kingdom of Saudi Arabia

From the Public Health and Community Medicine (Radwan), Faculty of Medicine, Tanta University, Tanta, Egypt; from the Primary Health Care (Radwan, Mahmoud, Alfaifi, Alabdulkareem), Ministry of Health and from the College of Medicine (Alabdulkareem), Al-Imam Mohammad Ibn Saud Islamic University, Riyadh, Kingdom of Saudi Arabia

From the Public Health and Community Medicine (Radwan), Faculty of Medicine, Tanta University, Tanta, Egypt; from the Primary Health Care (Radwan, Mahmoud, Alfaifi, Alabdulkareem), Ministry of Health and from the College of Medicine (Alabdulkareem), Al-Imam Mohammad Ibn Saud Islamic University, Riyadh, Kingdom of Saudi Arabia

From the Public Health and Community Medicine (Radwan), Faculty of Medicine, Tanta University, Tanta, Egypt; from the Primary Health Care (Radwan, Mahmoud, Alfaifi, Alabdulkareem), Ministry of Health and from the College of Medicine (Alabdulkareem), Al-Imam Mohammad Ibn Saud Islamic University, Riyadh, Kingdom of Saudi Arabia