1. School of Applied Computational Sciences, Meharry Medical College, Nashville, TN 37208, USA
2. Priority Department Centre «Veritas» D. Serikbayev, East Kazakhstan Technical University, Ust-Kamenogorsk 070000, Kazakhstan
3. GIS Center, Austin Peay State University, Clarksville, TN 37044, USA
4. Department of Public Health, School of Graduate Studies, Meharry Medical College, Nashville, TN 37208, USA