Ishfaq, Asim, Muhammad Shahzad, Qasim Bashir, and Syeda Hiraa Jeelani. 2020. “CORRELATION BETWEEN CLINICAL NEUROGENIC CLAUDICATION OUTCOME SCORE (NCOS) AND RADIOLOGICAL GRADING OF LUMBAR SPINAL STENOSIS ON MAGNETIC RESONANCE IMAGING LUMBOSACRAL SPINE”. Pakistan Armed Forces Medical Journal 70 (5): 1506-10. https://pafmj.org/PAFMJ/article/view/5595.