Analisis Praktik Residensi Keperawatan Medikal Bedah pada Pasien dengan Gangguan Sistem Kardiovaskuler dengan Pendekatan Care, Core, Cure di Rumah Sakit Jantung dan Pembuluh Darah Harapan Kita Jakarta = Analysis of Medical Surgical Nursing Residency Practice in Patients with Disorders of the Cardiovascular System with the Care, Core, Cure Approach at Harapan Kita Heart and Vascular Hospital Jakarta