Moellhoff, Nicholas, Tim J. Staiger, Denis Ehrl, Lukas H. Kohler, Anne Guertler, Riccardo E. Giunta, Sebastian Cotofana, and Konstantin Frank. 2022. “Identifying the Most Attractive Umbilical Position – an Eye Tracking- and Survey-Based Investigation”. Journal of Plastic Surgery and Hand Surgery 56 (6):369-75. https://doi.org/10.1080/2000656X.2021.2017946.