Effect of chronic hydroxychloroquine use on COVID-19 risk in patients with rheumatoid arthritis and systemic lupus erythematosus: a multicenter retrospective cohort oleh Ismail A. Walbi, Hassan A. Albarqi, Nayef Saleh Alghanim, Marzooq Abdullah Albadi, Hesham Mohammed Al Maimouni, Saad Ahmed Alkahtani, Ali Mohamed Alshabi, Amer S. Alali, Faleh Alqahtani, Amal Hassan Al-Najjar, Mohammad A Hazzazi, Deemah S Alanazi, Abdulrahman Abdulaziz Sabei, Omer S Alsaweed, Rahaf K Alajra, Hussain Alqhtani