Correction: Efficiency of non-ionic surfactants - EDTA for treating TPH and heavy metals from contaminated soil.

© 2014 Baziar et al.; licensee BioMed Central L Commons Attribution License (http://creativec reproduction in any medium, provided the or Dedication waiver (http://creativecommons.or unless otherwise stated. Author details Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Science, Tehran, Iran. Department of Environmental Health, Faculty of Health, Zanjan University of Medical Sciences, Zanjan, Iran. Department of Health, Neyshabur University of Medical Sciences, Neyshabur, Iran.