The regionalization of infant cardiac care in New England.
D000552:Ambulances; D001724:Birth Weight; D006328:Cardiac Catheterization; D006348:Cardiac Surgical Procedures; D003237:Connecticut; D005500:Follow-Up Studies; D006330:Heart Defects, Congenital / Q000175:diagnosis / Q000601:surgery*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008281:Maine; D008404:Massachusetts; D009513:New Hampshire; D011379:Prognosis; D012041:Regional Medical Programs; D012237:Rhode Island; D014707:Vermont