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APA Citation
Jennings, V., Haile, L. T., Simmons, R. G., Spieler, J., & Shattuck, D. (2019). perfect- and typical-use effectiveness of the Dot fertility app over 13 cycles: results from a prospective contraceptive effectiveness trial. European journal of contraception & reproductive health care, 24, 148–153. http://access.bl.uk/ark:/81055/vdc_100081445741.0x00003d