title: Reply to the letter: 'Physical activity and survival in breast cancer: What were missing?' by Wu H, Wang D, and Ruan X.
authors.affiliation: Survivorship Unit, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark; Institute of Sports Medicine and Biomechanics, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark. Electronic address: gunnam@cancer.dk.
authors.forename: Gunn
authors.initials: G
authors.lastname: Ammitzbøll
authors.affiliation: Institute of Sports Medicine and Biomechanics, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark.
authors.forename: Karen
authors.initials: K
authors.lastname: Søgaard
authors.affiliation: Survivorship Unit, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark.
authors.forename: Randi V
authors.initials: RV
authors.lastname: Karlsen
authors.affiliation: Diet, Lifestyle and Genes, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark.
authors.forename: Anne
authors.initials: A
authors.lastname: Tjønneland
authors.affiliation: The Finsen Centre, Copenhagen University Hospital, Blegdamsvej 9, 2100 Copenhagen, Denmark; Survivorship Unit, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark.
authors.forename: Christoffer
authors.initials: C
authors.lastname: Johansen
authors.affiliation: Survivorship Unit, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark.
authors.forename: Kirsten
authors.initials: K
authors.lastname: Frederiksen
authors.affiliation: Survivorship Unit, Danish Cancer Society Research Center, Strandboulevarden 49, 2100 Copenhagen, Denmark.
authors.forename: Pernille
authors.initials: P
authors.lastname: Bidstrup
mesh_terms: D001943:Breast Neoplasms; D015444:Exercise; D006801:Humans