As depicted in Supplementary Table S2, on-admission factors associated with mortality in cox proportional hazards model were age, history of myalgia, loss of consciousness, vertigo and vomiting, skin lesions, alcohol consumption, history of gastrointestinal problems, rheumatoid arthritis, Neurologic disorders, leukocytosis, thrombocytopenia, low hemoglobin level, high CRP, low HCO3, high CPK level, low oxygen saturation, pulse rate, and respiratory rate. Here, CRP is linked to rheumatoid arthritis.