Hubungan Kadar Hemoglobin Sebelum Operasi dengan Kebutuhan Transfusi Sel Darah Merah Intra Operasi pada Pasien Bedah Pintas Arteri Koroner di RSUD Abdul Wahab Sjahranie SamarindaThe Correlation between Preoperative Hemoglobin Level and Red Blood Cell Transfusion Intraoperative among Patients with Coronary Artery Bypass Graft at RSUD Abdul Wahab Sjahranie