1. Division of Maternal-Fetal Medicine, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
2. Division of Maternal-Fetal Medicine, King Abdulaziz Medical City, Ministry of National Guard Health Affairs, Riyadh, Kingdom of Saudi Arabia
3. Musculoskeletal Oncology Unit, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
4. Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada