https://annals-general-psychiatry.biomedcentral.com/articles/10.1186/s12991-017-0131-9
https://annals-general-psychiatry.biomedcentral.com/articles/10.1186/s12991-017-0126-6
https://annals-general-psychiatry.biomedcentral.com/articles/10.1186/s12991-016-0124-0
https://annals-general-psychiatry.biomedcentral.com/articles/10.1186/s12991-016-0125-z