Medical research

Regulatory hurdles make HIV research less effective, experts say

A regulatory conundrum faces researchers trying to slow the spread of HIV among minors. Sometimes those researchers need consent from parents, a requirement that can leave some of the most endangered minors out of the picture.

Health

State gun laws may help curb violence across state lines

Columbia University Mailman School of Public Health researchers find that strong state firearm laws are associated with fewer firearm homicides—both within the state where the laws are enacted and across state lines. Conversely, ...

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