Saifuddin, Anshari, Ujainah Zaini Nasir, Iris Rengganis, and Hamzah Shatri. 2020. “Risk Factors for Asthma Exacerbation Among Hajj Pilgrims: A Case Study from DKI Jakarta, Indonesia”. Medical Journal of Indonesia 29 (2), 190–7. https://doi.org/10.13181/mji.oa.204170.