A Prospective Evaluation of Tocilizumab in Patients With Rheumatoid Arthritis Refractory to Conventional Disease-Modifying Anti-Rheumatic Medications (DMARDs). - Yousaf J; Khurshid M; Naseem S; Wani R; Ali M; Amjad A; Elrefae A; Faizan Ejaz K; Qandeel M; Khattak MI; Khan S (Cureus, 2025)