I'm really too busy to post anything of substance right now, but I just had to share this one (be sure to read the comments at the bottom, too)...
Parachute use to prevent death and major trauma related to gravitational challenge: systematic review of randomised controlled trials
Gordon C S Smith, professor1, Jill P Pell, consultant2
BMJ 2003;327:1459-1461 (20 December), doi:10.1136/bmj.327.7429.1459
1 Department of Obstetrics and Gynaecology, Cambridge University, Cambridge CB2 2QQ, 2 Department of Public Health, Greater Glasgow NHS Board, Glasgow G3 8YU