https://annals-general-psychiatry.biomedcentral.com/articles/10.1186/s12991-014-0025-z
https://annals-general-psychiatry.biomedcentral.com/articles/10.1186/s12991-014-0026-y
https://annals-general-psychiatry.biomedcentral.com/articles/10.1186/s12991-014-0027-x