I am cosmetic surgeon. I was 3rd president of ASLS and now I am chairman of international ASLS(Aesthetic Surgery and LASER Society). Main specialty is minimal invasive surgery, especially PDO thread lifting in aesthetic field. I wrote several books and journals, such as Skin rejuvenation to make use of absorbable PDO suture in regenerative medicine, ILLUSTRATED ATLAS for PDO THREAD and BOTULINUM TOXIN, Introduction of laser for beginners, Tissue changes over time after polydioxanone thread insertion : An animal study with pigs, etc.