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APA Citation
Bobdiwala, S., Saso, S., Verbakel, J., Al‐Memar, M., Van Calster, B., Timmerman, D., & Bourne, T. (2019). diagnostic protocols for the management of pregnancy of unknown location: a systematic review and meta‐analysis. BJOG, 126, 190–198. http://access.bl.uk/ark:/81055/vdc_100075222900.0x000022