LEUNG, H. H., J. K. IP, A. Y. CHAN, P. C. NGAI, and L. C. POON. “How Has COVID-19 Impacted Obstetrics?”. Hong Kong Journal of Gynaecology, Obstetrics and Midwifery, vol. 21, no. 1, Jan. 2021, doi:10.12809/hkjgom.21.1.00.