RT Journal Article SR Electronic T1 Epidemiology and product safety--opportunities and limitations. JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 212 OP 213 DO 10.1136/ip.1.4.212 VO 1 IS 4 A1 J. A. Waller YR 1995 UL http://injuryprevention.bmj.com/content/1/4/212.abstract AB