Seungho Ryu, MD, PhD,
Department of Occupational and Environmental Medicine, Kangbuk Samsung Hospital
Sungkyunkwan University School of Medicine
Samsung Main Building B2, 250, Taepyung-ro 2ga, Jung-gu, Seoul, Republic of Korea 04514
Telephone: +82-2-2001-5137, Fax: +82-2-757-0436, Email address: sh703.yoo@gmail.com
ORCID ID: 0000-0002-3927-8646
We have no conflicts of interest to disclose.