Analisis Kebutuhan Perawat Berdasarkan Beban Kerja dengan Menggunakan Metode Workload Indicators of Staffing Need (WISN) di Unit Rawat Inap RSUD Cilincing Tahun 2017 = Nursing Need Analysis Based on Workload Using Workload Indicators of Staffing Need (WISN) Method Inpatient Unit of RSUD Cilincing Year 2017