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APA Citation
Fong, A., Wu, E., Pan, D., Chung, J. H., & Ogunyemi, D. A. (2014). temporal trends and morbidities of vacuum, forceps, and combined use of both. Journal of maternal-fetal & neonatal medicine, 27, 1886–1891. http://access.bl.uk/ark:/81055/vdc_100024972877.0x000048