Hollenstein, Yvonne, Luigia Elzi, Christoph Hatz, Jakob Passweg, Maja Weisser, Marcel Stoeckle, Joerg Halter, and Adrian Egli. 2015. “Travelling Activity and Travel-Related Risks After Allogeneic Haematopoietic Stem Cell Transplantation – a Single Centre Survey”. Swiss Medical Weekly 145 (2122):w14136. https://doi.org/10.4414/smw.2015.14136.