Received: 24 April 2019
Accepted: 25 September 2019
First Online: 12 October 2019
Ethics approval and consent to participate
: All procedures for all studies were approved by a King’s College London research ethics committee (Study 1: MR/17/18–249; Study 2: LRU-15/16–2532; Study 3: MRS-17/18–8217; Studies 4 and 5: MRS-17/18–8195; Study 6: MR/16/17–29; Study 7: MR/18/19–10572). All participants provided fully informed consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.