Matthes, Katarina Luise
Limam, Manuela
Pestoni, Giulia
Held, Leonhard
Korol, Dimitri
Rohrmann, Sabine
Article History
Received: 9 January 2018
Accepted: 27 January 2018
First Online: 7 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: Cancer cases in the Canton of Zurich are registered with presumed consent and registration based on a decision by the Zurich Government Council from 1980 and the general registry approval by the Federal Commission of Experts for professional secrecy in medical research from 1995. All data were used anonymously in this analysis, and no approval from the Ethical Committee of the Canton of Zurich was necessary.