G6PD and rheumatic disorder: The results of this study were presented at the American College of Rheumatology's 2018 ACR/ARHP Annual Meeting (meeting abstract: Abramova I, Tuladhar S, Park K, et al. Revisit an Old Question: Should Glucose-6-Phosphate Dehydrogenase Level be Checked in Patients with Rheumatic Diseases Prior to Initiating Certain Drugs?