Chao, E., Hung, C., Lin, C., Ku, Y. J., Ain, Q. U., Metzger, D. S., & Lee, T. S. (2020). Adherence among HIV-positive injection drug users undergoing methadone treatment in Taiwan. BMC Psychiatry.

Chao, En, Chia-Chun Hung, Ching-Po Lin, Yi-Chien Jacob Ku, Qurat Ul Ain, David S. Metzger, e Tony Szu-Hsien Lee. "Adherence Among HIV-positive Injection Drug Users Undergoing Methadone Treatment in Taiwan." BMC Psychiatry 2020.

Chao, En, et al. "Adherence Among HIV-positive Injection Drug Users Undergoing Methadone Treatment in Taiwan." BMC Psychiatry 2020.