Aplikasi lean six sigma dalam mempercepat proses penagihan klaim pelayanan rawat inap pasien jaminan BPJS kesehatan di RS awal bros Pekanbaru tahun 2015 = Lean six sigma application in accelerating insurance claim life cycle process for inpatient BPJS health coverage at awal bros Pekanbaru hospital in 2015 / Gina Adriana