Dr. Wikipedia isn't so smart but lots of people are visiting her

Researchers looked at Wikipedia entries on the 10 most costly medical conditions in the United States (in terms of public and private expenditure), checking them against peer-reviewed medical research.

They found that nine of 10 of them had “statistically significant discordance” with medical literature. The basic conclusion: Wikipedia articles about medical conditions “contain many errors.” (The researchers didn’t judge Wikipedia entries by what they didn’t say, so errors of omission weren’t counted.)