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Reference update.

Posted by PLOS_ONE_Group on 14 Sep 2012 at 22:19 GMT

[72]–[75]
http://plosone.org/article/info:doi/10.1371/journal.pone.0036613#article1.body1.sec4.sec2.p1

Reference 74 was not fully indexed by the time it was accessed, but now it is (http://www.ncbi.nlm.nih.gov/pubmed/22459982). [^] “74. Mhyre JM (2012) Maternal mortality. Curr Opin Anaesthesiol 25(3): 277.”

No competing interests declared.