TPH1 and 5-HTTLPR genes specifically interact in opiate dependence but not in alcohol dependence

Tzu Yun Wang, Sheng Yu Lee, Yi Lun Chung, Shiou Lan Chen, Chia Ling Li, Yun Hsuan Chang, Liang Jen Wang, Po See Chen, Shih Heng Chen, Chun Hsien Chu, San Yuan Huang, Nian Sheng Tzeng, Tsai Hsin Hsieh, I. Hui Lee, Kao Chin Chen, Yen Kuang Yang, Jau Shyong Hong, Ru Band Lu