Text and Data Mining valid from 2019-12-01
First Online: 23 December 2019
Ethics approval and consent to participate
: The use of health record data was approved by the Regional Ethical Review Board in Stockholm (Etikprövningsnämnden i Stockholm.), permission number 2014/1882-31/5, and the ethical committee attached to Osakidetza (Basque Sanitary System). Consent to participate was not applicable.
: Not applicable
: The authors declare that they have no competing interests.