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Please note that the following grant number was inadvertently omitted from the Acknowledgments of the original article: NIH R01-ES015359, from the National Institute of Environmental Health Sciences.
Additionally, in line 5 of the footnotes to Tables 1 and 2, ‘abnormal mode of delivery’ should actually read: ‘abnormal deliveries’.
The online version of the original article can be found under doi:10.1007/s10803-010-0992-0.
