South China Morning Post
https://www.scmp.com/news/china/science/article/3275136/chinese-study-sheds-light-how-dopamine-transporter-can-cause-build-feel-good-hormone
Study reveals how dopamine transporter can cause build-up of ‘feel-good hormone’
Findings could lead to new treatments for dopamine transporter-related disorders and addiction to drugs such as cocaine, according to researchers.