Muhammad Zubair Khan, Tanveer Ul Haq, Muhammad Awais Khan, Asif Ur Rehman, Abdurehman, Sanaullah. FREQUENCY OF CAUSES OF INHALATION THERAPY FAILURE IN ASTHMA PATIENTS PRESENTING TO A TERTIARY CARE HOSPITAL IN PESHAWAR. J Popl Ther Clin Pharmacol. 2022;29(04):5096-5102. doi:10.53555/4nzg3575