Tipu, Hamid Nawaz, and Muhammad Mukarram Bashir. “PREVALENCE OF HUMAN LEUKOCYTE ANTIGEN (HLA) B27 AMONG PATIENTS OF SPONDYLOARTHROPATHIES REFERRED TO A TERTIARY CARE CENTER”. Pakistan Armed Forces Medical Journal 67, no. 6 (December 30, 2017): 958–61. Accessed July 19, 2024. https://pafmj.org/PAFMJ/article/view/1125.