1 Department of Otorhinolaryngology-Head & Neck Surgery, Hallym University College of Medicine, 22 Gwanpyeong-ro 170 beon-gil, Dongan-gu, Anyang, Republic of Korea; Hallym Data Science Laboratory, Hallym University College of Medicine, 22 Gwanpyeong-ro 170 beon-gil, Dongan-gu, Anyang, Republic of Korea.
2 Department of Obstetrics and Gynecology, Hallym University Sacred Heart Hospital, Hallym University College of Medicine, 22 Gwanpyeong-ro 170 beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do 431-796, Republic of Korea. Electronic address: ssugucap@naver.com.