DPP4 and diabetes mellitus: M, Male; F, female; DM, diabetes; undiagnosed, first time diagnosed with diabetes; HTN, hypertension; DLD, dyslipidemia; BPH, benign prostatic hyperplasia; SOB, shortness of breath; NR, not reported; NA, not applicable; DPP4, dipeptidyl peptidase 4 inhibitor; SGLT2 inhibitor, sodium glucose co-transporter 2 inhibitor; BMI, body mass index; ND, not done; BUN, blood urea nitrogen; AST, aspartate transaminase; ALT, alanine transaminase; ESR, erythrocyte sedimentation rate; CRP, C-reactive protein; LDH, lactate dehydrogenase; IV, intravenous; SC, subcutaneous; HCQ, hydroxychloroquine.