Buerki-Thurnherr, Tina, Ursula von Mandach, and Peter Wick. 2012. “Knocking at the Door of the Unborn Child: Engineered Nanoparticles at the Human Placental Barrier”. Swiss Medical Weekly 142 (1314):w13559. https://doi.org/10.4414/smw.2012.13559.