Agency for Healthcare Research and Quality (US), Archive [Internet]. 2007 Mar [cited 2013 Jan 15]. Nurse Staffing and Quality of Patient Care Evidence Reports/Technology Assessments, No. 151 Investigators: Robert L Kane, MD, Tatyana Shamliyan, MD, MS, Christine Mueller, PhD, RN, Sue Duval, PhD, and Timothy J Wilt, MD, MPH..