There is a significant error in the second sentence of the abstract (2007; 33:382-385)

Colleen C Denny and Christine Grady
Clinical research with economically disadvantaged populations.

The sentence reads "The economically disadvantaged are thought of as "venerable" to exploitation, impaired decision making, or both, thus requiring either special protections or complete exclusion from research." The word in scare quotes should be "vulnerable".

This error was not made by the authors.