Here is a great article on the topic. I wouldn't take any chance....
http://www.usatoday.com/tech/scienc...06/1?AID=4992781&PID=4170002&SID=71bgfa9lqk4r
http://www.usatoday.com/tech/scienc...06/1?AID=4992781&PID=4170002&SID=71bgfa9lqk4r