Comparison of Primary Care Patients’ and Unannounced Standardized Patients’ Perceptions of Care oleh Lisa Altshuler PhD, Harriet Fisher BA, Jeffrey Wilhite MPH, Zoe Phillips BA, Isaac Holmes MD, Richard E Greene MD, Andrew B Wallach MD, Reina Smith BA, Kathleen Hanley MD, Mark D Schwartz MD, Sondra Zabar MD