RT Journal Article SR Electronic T1 Mobile phone use and cancer JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 560 OP 570 DO 10.1136/oem.2003.007724 VO 61 IS 6 A1 M Kundi YR 2004 UL http://oem.bmj.com/content/61/6/560.abstract AB