Baddar, S. A., Al-Rawas, O. A., Al-Riyami, K. A., Worthing, E. A., Hanssens, Y. I., Taqi, A. M., & Al-Riyami, B. M. (2001). Metered-dose inhaler technique among healthcare providers practising in Oman. Sultan Qaboos University Medical Journal, 3(1), 39–43. Retrieved from https://journals.squ.edu.om/index.php/squmj/article/view/1215