Department of Dentistry, School of Medicine, Ewha Womans University, Seoul, Korea.
Address correspondence and reprint requests to Hyung-In Yoon, DDS, PhD, Department of Dentistry, School of Medicine, Ewha Womans University, 1071, Anyangcheon-ro, Yangcheon-gu, Seoul 07985, South Korea; E-mail: [email protected]
Received 25 February, 2016
Accepted 10 April, 2016
The authors report no conflicts of interest.
doi: 10.1097/SCS.0000000000002761
