Received: 11 September 2019
Accepted: 24 September 2019
First Online: 20 November 2019
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of the Institute of Psychiatry. Unfortunately, due to technical issues in our institutional IT system, our ethical committee reference number cannot be retrieved at the moment. However, we would be happy to supply a signed letter from our head of institution explaining that this research has been previously approved.A written informed consent was taken from participants after discussing the aim and procedures of the study. Participation was totally free and voluntary and did not imply a direct benefit for them. Moreover, they were guaranteed the right to refuse or withdraw from the study at any point without justification or consequences on them or their treated relatives. They were informed that the results could be used for scientific publication, but their identities would be absolutely confidential.
: Not applicable
: The authors declared that they have no competing interests.