The origin and evolution of a regional pediatric practice-based research network: practical and methodological lessons from the Pediatric Practice Research Group
Curr Probl Pediatr Adolesc Health Care. 2003 Apr;33(4):124-34.
doi: 10.1067/mps.2003.13.
1 Mary Ann and J. Milburn Smith Research Program, Children's Memorial Hospital and Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA.