1.
Qamar A, Qureshi M, Nazar S, Baig S, Iffat W, Owais M. Physical activity and apnoea-hypopnea index in obstructive sleep apnoea. PJP [Internet]. 26Nov.2019 [cited 21Feb.2020];15(3):67-0. Available from: http://pjp.pps.org.pk/index.php/PJP/article/view/1116