Ullah, Muhammad Usman, Jawad Khaliq Ansar, Sajid Mustafavi, Raheel Iftikhar, Waseem Raja, Wasib Husssain Shah, and Sohail Khan Raja. 2017. “THE EFFECT OF ADDING BODY MASS INDEX (BMI) AND NECK CIRCUMFERENCE TO EPWORTH SLEEPINESS SCALE (ESS) FOR DIAGNOSING OBSTRUCTIVE SLEEP APNEA HYPOPNEA SYNDROME IN SLEEP CLINICS: Diagnosing Obstructive Sleep Apnea Hypopnea Syndrome”. Pakistan Armed Forces Medical Journal 66 (1):57-61. https://www.pafmj.org/PAFMJ/article/view/206.