RT Journal Article SR Electronic T1 Postmarketing surveillance of injury countermeasures. JF Injury Prevention JO Inj Prev FD BMJ Publishing Group Ltd SP 174 OP 175 DO 10.1136/ip.2.3.174 VO 2 IS 3 A1 T. Nolan YR 1996 UL http://injuryprevention.bmj.com/content/2/3/174.abstract AB