The Permanente Journal / Summer 1997/Volume 1 No. 1 ROBERT S. MCDUFFIE, JR, MD is a Perinatologist for the Colorado Permanente Medical Group, PC (CPMG). ALBERT D. HAVERKAMP, MD is a Perinatologist for the CPMG, and a Clinical Professor in the Department of Preventive Medicine and Biometrics at the University of Colorado Health Sciences Center. BRENDA BEATY, MSPH, MARILYN LEFF, MPSH, and MIRIAM ...