Dr Chavi Sethi, Dr Chitrangana Gupta, Dr Amit Sehgal, and Dr. RK Verma. 2024. “A RETROSPECTIVE CROSS-SECTIONAL STUDY ON VITAMIN D DEFICIENCY AND IT’S CORRELATION WITH LOW BACK PAIN IN OT PERSONNEL”. Journal of Population Therapeutics and Clinical Pharmacology 31 (3): 2208-14. https://doi.org/10.53555/jptcp.v31i3.5281.