1. Department of Mathematics, University of the Punjab, Lahore 54590, Pakistan
2. Department of Construction Management and Real Estate, Vilnius Gediminas Technical University, Sauletekio al. 11, LT-10223 Vilnius, Lithuania
3. Department of Medical Services and Techniques, Vocational School of Health Services, Sivas Cumhuriyet University, Sivas 58140, Turkey