Abdullah, M., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia, Human Cancer Research Center, Indonesian Medical Education and Research Institute, Faculty of Medicine, University of Indonesia, Jakarta, Indonesia; Sukartini, N., Department of Clinical Pathology, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Nursyirwan, S.A., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Pribadi, R.R., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Maulahela, H., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Utari, A.P., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Muzellina, V.N., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Wiraatmadja, A., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia; Renaldi, K., Division of Gastroenterology, Department of Internal Medicine, Faculty of Medicine, University of Indonesia, Dr. Cipto Mangunkusumo National General Hospital, Jakarta, Indonesia