Reid R.L., Westhoff C., Mansour D., De Vries C., Verhaeghe J., Boschitsch E., Gompel A., Birkhäuser M., Křepelka P., Duliček P., Iversen O.E., Khamoshina M., Dežman L.V., Fruzzetti F., Szarewski A., Wilken-Jensen C., Seidman D., Kaaja R., Shapiro S.
Journal of Family Planning and Reproductive Health Care.
Faculty of Family Planning and Reproductive Health Care.
Vol. 36.
2010.
P. 117-122