Keep up to date with the latest news and content from BMC Public Health and BioMed Central.
Chang Dong Han, Ik Hwan Yang, Woo Suk Lee, Yoo Jung Park and Kwan Kyu Park*
Corresponding author: Kwan K Park firstname.lastname@example.org
BMC Public Health 2013, 13:603
Fields marked * are required
BioMed Central Ltd unless otherwise stated. Part of Springer Science+Business Media.