In the above paper the authors were listed with inverted first and second names. The list has now been corrected to the following:
Mojgan Firouzbaht, Karimollah Hajian-Tilaki, Dariush Moslemi
Contributor Information
Mojgan Firouzbakht, Social Determinants of Health Research Center, Health Research Institute, Ghang-Afrouz St. Babol University of Medical Sciences, Babol, Iran.
Karimollah Hajian-Tilaki, Department of Biostatistics and Epidemiology, Ghang-Afrouz St. Babol University of Medical Sciences, Babol, Iran.
Dariush Moslemi, Department of Radiotherapy, School of Paramedical Sciences, Ghang-Afrouz St. Babol University of Medical Sciences, Babol, Iran.