1. Department of Obstetrics and Gynecology, Korea University College of Medicine, Seoul, Korea.
2. Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Korea.
3. Computational Biology Department, Carnegie Mellon University, Pittsburgh, PA, USA.
4. Department of Statistics, Korea University, Seoul, Korea.
5. Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology (SAIHST), Samsung Medical Center, Sungkyunkwan University, Seoul, Korea.