title: Reply to C. Cozzarini et al.
authors.affiliation: Charité Universitätsmedizin, Berlin, Germany pirus.ghadjar@charite.de.
authors.forename: Pirus
authors.initials: P
authors.lastname: Ghadjar
authors.affiliation: Swiss Group for Clinical Cancer Research Coordinating Center, Bern, Switzerland.
authors.forename: Stefanie
authors.initials: S
authors.lastname: Hayoz
authors.affiliation: International Breast Cancer Study Group Coordinating Center and Inselspital, Bern University Hospital, Bern, Switzerland.
authors.forename: Jürg
authors.initials: J
authors.lastname: Bernhard
authors.affiliation: Kantonsspital Graubünden, Chur, Switzerland.
authors.forename: Daniel R
authors.initials: DR
authors.lastname: Zwahlen
authors.affiliation: Inselspital, Bern University Hospital, Bern, Switzerland.
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Aebersold