Referral Management and the Care of Patients With DiabetesByCatherine Kim, MD, MPH,David F. Williamson, PhD,William H. Herman, MD, MPH,Monika M. Safford, MD,Joseph V. Selby, MD, MPH,David G. Marrero, PhD,J. David Curb, MD, MPH,Theodore J. Thompson, MSFebruary 1st 2004