1. Department of Medicine, Panyananthaphikkhu Chonprathan Medical Center, Srinakharinwirot University, Nonthaburi, Thailand
2. Department of Nursing, Panyananthaphikkhu Chonprathan Medical Center, Srinakharinwirot University, Nonthaburi, Thailand
3. Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand