https://aidsrestherapy.biomedcentral.com/articles/10.1186/1742-6405-10-21
https://aidsrestherapy.biomedcentral.com/articles/10.1186/1742-6405-10-20
https://aidsrestherapy.biomedcentral.com/articles/10.1186/1742-6405-10-18
https://aidsrestherapy.biomedcentral.com/articles/10.1186/1742-6405-10-19