Ali, Liaquat, et al. “COMPARATIVE EFFICACY OF INTRAVENOUS METHYLPREDNISOLONE VERSUS INTRAVENOUS HYDROCORTISONE IN ACUTE SEVERE ASTHMA”. Pakistan Armed Forces Medical Journal, vol. 59, no. 2, Aug. 2018, pp. 180-3, https://pafmj.org/PAFMJ/article/view/1870.