[1] Seoul St Marys Hosp, Seoul, South Korea
[2] St Vincents Hosp, Suwon, South Korea
[3] Incheon St Marys Hosp, Incheon, South Korea
[4] Bucheon St Marys Hosp, Bucheon, South Korea
[5] Daejeon St Marys Hosp, Daejeon, South Korea
[6] Uijeongbu St Marys Hosp, Uijongbu, South Korea
[7] Eunpyeong St Marys Hosp, Seoul, South Korea
[8] Yeouido St Marys Hosp, Neurol, Seoul, South Korea