Minghua Xiong1, Chunyan Li1*, Junbo Pan1, Xiaosong Cheng2, and Chuanwu Xi3
1College of Resource and Environment, Northeast Agricultural University, 150030 Harbin, China.
2College of First Clinical Medicine of Harbin Medical University, 150001 Harbin, China.
3School of Public Health, University of Michigan, 48109 Ann Arbor, MI, USA.
