De Roover, R., Donnay, I., Kinnar, T., Bombaerts, P., Schuurbiers, N., Massip, A., & Dessy, F. (1997). Follicular monitoring as a means to select donors for ovum pick-up. Theriogenology, 47(1), 154. https://hdl.handle.net/2078.5/189851 (Original work published 1997)