MOESM1 of Interaction between cytochrome P450 2A6 and Catechol-O-Methyltransferase genes and their association with smoking risk in young men OuWei-Chih HuangYi-Chin HuangChih-Ling LinMin-Hsuan ChenYi-Chun ChenYi-Ju LiuChen-Nu ChenMei-Chih HuangChing-Shan ChenPei-Lain 2017 Additional file 1: Table S1. Results of PCR–RFLP fragments for CYP2A6.