1. Lasers Surg Med . 2023 Nov;55(9):809-816. doi: 10.1002/lsm.23719. Epub 2023 Aug 26. Needleless laser injector versus needle injection for skin enhancement and rejuvenation effect of dermal filler ############ 2. Drug Deliv Transl Res . 2022 Feb;12(2):384-394. doi: 10.1007/s13346-021-01049-7. Epub 2021 Sep 3. Dispersion profile of a needle-free jet injection depends on the interfacial property of the medium ############ 3. Intradermal Injection of Poly-d, l-Lactic Acid Using Microneedle Fractional Radiofrequency for Acne Scars: An Open-Label Prospective Trial Hyeong, Jin Hyeok MD*; Jung, Joon Woo MD*; Seo, Suk Bae MD†; Kim, Hong Seok MD‡; Kim, Kwang Ho MD* Author Information Dermatologic Surgery 48(12):p 1306-1311, December 2022. | DOI: 10.1097/DSS.0000000000003627 감사합니다