1 Breast Center, University Hospital Basel, Basel, Switzerland.
2 Department of Plastic, Reconstructive, Aesthetic and Hand Surgery, University Hospital Basel, Basel, Switzerland.
3 Faculty of Medicine, University of Basel, Basel, Switzerland.
4 Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.
5 Department of Surgery, Breast Unit, Capio St. Göran's Hospital, Stockholm, Sweden.
6 Centro di Senologia della Svizzera Italiana and Department of Plastic, Reconstructive and Aesthetic Surgery, Ospedale Regionale di Lugano, Ente Ospedaliero Cantonale (EOC), Lugano, Switzerland.
7 Faculty of Medicine, University of Zurich, Zurich, Switzerland.