Access to chloroquine in patients with rheumatic and musculoskeletal diseases attending rheumatology outpatient clinics during the COVID-19 pandemic. - Ntshalintshali SD; Geldenhuys EM; Moosajee F; Musa WAM; Du Plessis L; Viljoen A; Fortuin D; Du Toit R (South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde, 2021)