Lazarus G., Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, RW 5, Kenari, Kec. Senen, Jakarta, Kota Jakarta Pusat, 10430, Indonesia; Budiman R.A., Faculty of Medicine, Universitas Indonesia, Jl. Salemba Raya No. 6, RW 5, Kenari, Kec. S