title: Reply to the letter to the editor 'Journey to a faraway land' by Alkan et al.
authors.affiliation: Department of Obstetrics and Gynecology, University of Tuebingen, Tuebingen, Germany andreas.hartkopf@med.uni-tuebingen.de.
authors.forename: A D
authors.initials: AD
authors.lastname: Hartkopf
authors.affiliation: Department of Obstetrics and Gynecology, University of Tuebingen, Tuebingen, Germany.
authors.forename: S Y
authors.initials: SY
authors.lastname: Brucker
authors.affiliation: Department of Obstetrics and Gynecology, University of Tuebingen, Tuebingen, Germany.
authors.forename: F-A
authors.initials: FA
authors.lastname: Taran
mesh_terms: D001853:Bone Marrow / Q000473:pathology*; D001943:Breast Neoplasms / Q000473:pathology* / Q000601:surgery*; D005260:Female; D006801:Humans; D008408:Mastectomy; D009364:Neoplasm Recurrence, Local; D009360:Neoplastic Cells, Circulating / Q000473:pathology*