[1]
LUI, K.-Y., LEE, Y.-T., SO, C.-H. and YU, E.L. 2017. Difference in Serum Human Chorionic Gonadotrophin Levels Measured Using the World Health Organization 3rd versus 5th International Standard: A Correlation Study with Reference to Management of Pregnancy of Unknown Location. Hong Kong Journal of Gynaecology, Obstetrics and Midwifery. 17, 1 (Jan. 2017). DOI:https://doi.org/10.12809/hkjgom.17.1.219.