Elisardo C Vasquez, Federal University of Espirito Santo
4 July 2011
After publication we, the authors, noticed a typographical error in the article. In the methods section, ¿4.7 MgSO, 1.17 H2O¿ should be ¿4.7 MgSO4¿7H2O¿. We apologise for any inconvenience caused to the reader.
Typographical error in Methods
4 July 2011
After publication we, the authors, noticed a typographical error in the article. In the methods section, ¿4.7 MgSO, 1.17 H2O¿ should be ¿4.7 MgSO4¿7H2O¿. We apologise for any inconvenience caused to the reader.
Competing interests
None declared