Ronald Winardi Kartika Departement of Surgery, Faculty of Medicine, Krida Wacana Christian University, Jakarta Indonesia
Yosephin Sri Susanti Departement of Occupational Medicine, Faculty of Medicine, Krida Wacana Christian University, Jakarta Indonesia
Susanti Dewi Winata Departement of Occupational Medicine, Faculty of Medicine, Krida Wacana Christian University, Jakarta Indonesia