Pane, Masdalina, Chairul R Nasution, and Murdani Abdullah. 2007. “Upper Gastrointestinal Symptoms and Climate Exchange in Indonesian Hajj Pilgrims: Community Based Study Islamic Year 1427”. The Indonesian Journal of Gastroenterology, Hepatology, and Digestive Endoscopy 8 (2):44-47. https://doi.org/10.24871/82200744-47.