03722 Severance Hospital, 50-1 Yonsei-ro, Seodaemun-gu, Seoul Severance Hospital 50-1 Yonsei-ro, Seodaemun-gu, Seoul 03722, Republic of Korea

Mizmedi Hospital, 295 Gangseo-ro, Gangseo-gu, Seoul

Suite 401-413, Prince"s Building, Chater Road, Central, Hong Kong

12/F, Central Tower 28 Queen"s Road Central, Central, Hong Kong

1073 Jungang-ro, Ilsandong-gu, Goyang-si, Gyeonggi-do

Rooms 201~206, 2nd floor, 36, Seonseonchongwonwon-ro, Namdong-gu, Incheon _(Rooms 201~206, 2nd floor, Guwol Asiad The Blue City, 1527 Guwol-dong, Namdong-gu, Incheon)