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APA Citation
Sommer, G. J., Wang, T. R., Epperson, J. G., Hatch, E. E., Wesselink, A. K., Rothman, K. J., Fredriksen, L. L., Schaff, U. Y., Behr, B., Eisenberg, M. L., & Wise, L. A. (n.d.). at‐home sperm testing for epidemiologic studies: Evaluation of the Trak male fertility testing system in an internet‐based preconception cohort. Paediatric and perinatal epidemiology, 34(5), 504–512. http://access.bl.uk/ark:/81055/vdc_100106958721.0x00003c