Samorinha, C., Severo, M., Machado, H., Figueiredo, B., Freitas, C. & Silva, S. (2016). Couples' willingness to donate embryos for research: a longitudinal study. Acta Obstetricia et Gynecologica Scandinavica, 95(8), 912?919. https://doi.org/10.1111/aogs.12900