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APA Citation
Thaxter Nesbeth, K. A., Samuels, L. A., Nicholson Daley, C., Gossell-Williams, M., & Nesbeth, D. A. (n.d.). ptyalism in pregnancy – a review of epidemiology and practices. European journal of obstetrics, gynecology, and reproductive biology, 198, 47–49. http://access.bl.uk/ark:/81055/vdc_100096851871.0x00004b