Korean J Pediatr 2011;54:241-5.
http://dx.doi.org/10.3345/kjp.2011.54.6.241. PMID: 21949518 [PubMed]
The following article is being retracted as a part of the manuscript was plagiarized.
Yeong-Ho Rha, MD, PhD
Editor-in-Chief,
Korean J Pediatr