1. Bioinformatics and Mathematical Biosciences Lab, Department of Agronomy, Horticulture and Plant Science, South Dakota State University, Brookings, SD, USA
2. Department of Mathematics and Statistics, South Dakota State University, Brookings, SD, USA
3. Center for Applied Mathematics, Tianjin University, Tianjin, China
4. BioSNTR, Brookings, SD, USA
5. Population Health group, Sanford Research, Sioux Falls, SD, USA