As we add more content addressing new research, we will post here and direct you to the relevant location.

9/23/2012 Rear-facing Child Restraints
Correction to quoted statistics made as follows (1-2 changed to 0-2):
This means that most children can remain rear-facing through age 2 years, based on average child sizes and the capacity of most rear-facing convertible restraint products on the market. US crash data show that children aged 0–2 years are 5.53 times safer in a rear-facing restraint than in a forward-facing restraint in side impacts and 1.23 times safer in frontal impacts (Henary et al. 2007).

12/30/2012 Boosters, References
Added reference (O'Neil et al. 2012) describing fatal case of 5-year-old in booster placing shoulder belt behind back while using a booster, plus revised relevant text under boosters.