Specialization:
1. Appan, S. (1995). Preventive approaches to pediatric cardiology in Singapore. — Asian Journal of Pediatrics.
2. Appan, S. (2005). Role of echocardiography in early detection of congenital heart disease. — Singapore Medical Journal.
3. Appan, S. (2016). Improving outcomes in pediatric cardiac preventive care: A 20-year perspective. — Annals of Academy of Medicine Singapore.
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