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Ashraf DS, Hassan DZ, Ur Rehman PDS. EFFECTS OF POSTURAL DRAINAGE AND DEEP BREATHING EXERCISES ON DYSPNEA, OXYGEN SATURATION AND LEVEL OF EXERTION IN ELDERLY POST COVID-19 PATIENTS. pjr [Internet]. 2022Jul.7 [cited 2024Apr.20];11(2):153-9. Available from: http://ojs.zu.edu.pk/ojs/index.php/pjr/article/view/1448