The study was carried from June 2009 to October 2009.Results: The study had shown that the highest occurrence rate were of hearing impairment 73%, bone and joint pain 70%, lower back pain 69%, frequency of urination 56.7%, hair loss 51%. The remaining symptoms had occurred with lower frequency, including dyspnea 23%, tinnitus 21%, decreased movement skills 10%, and swelling of lower limbs 8%.