Golabadi, M., M. Attarchi, S. Raeisi, and M. Namvar. “Effects of Psychosocial Strain on Back Symptoms in Tehran General Hospital Nursing Personnel”. Archives of Industrial Hygiene and Toxicology, Vol. 64, no. 4, Dec. 2013, doi:10.2478/10004-1254-64-2013-2366.