Received: 17 June 2019
Accepted: 27 November 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: NHS Research Ethics Committees ethical approval was sought and granted for BCS70 follow-ups from 2000 onwards.
: Not applicable.
: Author Luis Salvador-Carulla is currently acting as a Guest Editor for BMC Psychiatry; all other authors have nothing to declare.