Saifuddin, A., Nasir, U.Z., Rengganis, I. and Shatri, H. 2020. Risk factors for asthma exacerbation among Hajj pilgrims: a case study from DKI Jakarta, Indonesia. Medical Journal of Indonesia. 29, 2 (Jul. 2020), 190–7. DOI:https://doi.org/10.13181/mji.oa.204170.