Kadar kromium serum pada penderita baru laki-laki penyakit jantung koroner di RS Jantung Harapan Kita dan hubungannya dengan kadar gula darah, profil lipid darah dan tingkat oklusi koroner = The serum xhromium concentration of the new male patients of the coronary heart disease at The Heart Hospital Harapan Kita, and its relation to the blood sugar concentration, the lipid profile and the level of coronary occlusion - Effendi Rustan , author (Fakultas Kedokteran Universitas Indonesia, 1998)