[1] Seoul Natl Univ, Seoul Natl Univ Hosp, Dept Rehabil Med, Coll Med, Seoul, South Korea
[2] Seoul Natl Univ, SMG SNU Boramae Med Ctr, Dept Rehabil Med, Coll Med, 20 Boramae Ro 5 Gil, Seoul 07061, South Korea
[3] Yonsei Univ, Dept Rehabil Med, Coll Med, Seoul, South Korea
[4] Dongguk Univ, Dept Rehabil Med, Coll Med, Goyang, South Korea
[5] Jesus Hosp, Dept Phys Med & Rehabil, Presbyterian Med Ctr, Jeonju, South Korea
[6] Yonsei Univ, Dept & Res Inst Rehabil Med, Coll Med, Seoul, South Korea
[7] Natl Hlth Insurance Serv Ilsan Hosp, Dept Phys Med & Rehabil, Goyang, South Korea