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2. Evaluation and initial management of cyanotic heart disease in the newborn;Geggel,2003
3. The history of the stethoscope [editorial];Abdulla;Pediatr Cardiol,2001
4. Clinical auscultation skills in pediatric residents;Gaskin;Pediatrics,2000
5. Cardiac auscultation skills in internal medicine and family practice trainees: A comparison of diagnostic proficiency;Mangione;JAMA,1997