Siwon Lee is a Resident in Obstetrics and Gynecology, Mount Sinai Medical Center, FL, USA. She graduated from Ewha Womans University School of Medicine, with their MD in 2001, and PhD in 2015. Siwon worked as a professor in Maternal Fetal Medicine, in Cheil General Hospital and Women’s Healthcare Center, Seoul, Korea, until 2018. Her current and previous research interests include obstetric ultrasound, preterm delivery, and multiple pregnancies. She is a member of the American College of Obstetricians and Gynecologist, American Institute of Ultrasound in Medicine, American Society of Reproductive Medicine, Korean society of MFM, Korean Society of OBGYN, and Korean Society of Ultrasound in Medicine.