Sinaga, Wina, Faculty of Medicine, Universitas Indonesia – dr. Cipto Mangunkusumo General Hospital Sinaga, Wina, Faculty of Medicine, Universitas Indonesia – Dr. Cipto Mangunkusumo General Hospital, Jakarta, Indonesia Singal, Anna Maurina , Universitas Indonesia Hospital, Universitas Indonesia, Depok, Indonesia Singal, Anna Maurina, Faculty of Medicine Universitas Indonesia – The University of Indonesia Hospital (RSUI) Singal, Anna Maurina, Faculty of Medicine Universitas Indonesia –The University of Indonesia Hospital (RSUI), Depok, Indonesia Singal, Anna Maurina, Universitas Indonesia Hospital, Universitas Indonesia, Depok, Indonesia Sirait, Josephine Claudia Sirait, Josephine Claudia , Faculty of Medicine, Universitas Udayana, Prof. Dr. I.G.N.G Ngoerah Refferal Hospital, Bali, Indonesia Sirait, Josephine Claudia , Udayana University/Ngoerah Hospital, Bali, Indonesia Sitepu, Regina