1 Department of Biostatistics, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
2 Occupational Health Research Center, School of Public Health, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
3 Industrial Diseases Research Center, Faculty of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
4 Department of Hygiene and Ecomedicine, Faculty of Public Health, Medical University of Plovdiv, 15-A Vassil Aprilov Blvd., 4002, Plovdiv, Bulgaria. angelleloti@gmail.com.