OC16.01: The role of human chorionic gonadotrophin and transvaginal ultrasound in pregnancies of unknown location beyond 48 hours. (30th September 2019) - Kyriacou, C.; Bobdiwala, S.; Elkington, I.; Farren, J.; Mitchell‐Jones, N.; Ayim, F.; Chohan, B.; Guha, S.; Kirk, E.; Abughazza, O.; Al‐Memar, M.; Vathanan, V.; et al.