efficient wording JULIA PETEET, University of MS Medical Center 12 October 2011 I believe the article would be improved if the authors would substitute Group 1 and Group 2 for: "... ([less than or equal to]50 years old and [greater than or equal to]52 years old..." after initially stating the criteria for each group. Competing interests None
efficient wording
12 October 2011
I believe the article would be improved if the authors would substitute Group 1 and Group 2 for: "... ([less than or equal to]50 years old and [greater than or equal to]52 years old..." after initially stating the criteria for each group.
Competing interests
None