Kwon, H., Park, H. S., Shim, J., Lee, K. W., Choi, S., & Choi, G. Y. (2020). Randomized, Double-Blind, Placebo-Controlled Trial on the Efficacy of Hyaluronidase in Preventing Perineal Trauma in Nulliparous Women. Yonsei Med J.

Kwon, Hayan, Hyun Soo Park, Jae-Yoon Shim, Kyo Won Lee, Suk-Joo Choi, and Gyu Yeon Choi. "Randomized, Double-Blind, Placebo-Controlled Trial On the Efficacy of Hyaluronidase in Preventing Perineal Trauma in Nulliparous Women." Yonsei Med J 2020.

Kwon, Hayan, et al. "Randomized, Double-Blind, Placebo-Controlled Trial On the Efficacy of Hyaluronidase in Preventing Perineal Trauma in Nulliparous Women." Yonsei Med J 2020.