Habiburrahman, M., Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Lesmana, E., Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Harmen, F., Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Gratia, N., Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia; Mirtha, L.T., Department of Community Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia, Hospital of Universitas Indonesia, Depok, Indonesia