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Author to whom correspondence should be addressed; E-Mail: linda.mccauley@emory.edu Tel.: +1-404-727-7975
Linda McCauley, J. Antonio Tovar-Aguilar, Jeannie Economos and Joan Flocks had the original idea for the study and, with all co-authors, carried out the design. J. Antonio Tovar-Aguilar and Jeannie Economos were responsible for the recruitment and follow-up of study participants. Jennifer Runkle was responsible for data cleaning and carried out the analyses. Jennifer Runkle and Joan Flocks drafted the manuscript, which was revised by all authors. All authors read and approved the final manuscript.
The authors declare no conflict of interest.
This project was funded by grant award R21OH009830 from the Centers for Disease Control and Prevention. We would also like to acknowledge the preliminary data analysis work of Marie Semple.
© 2014 by the authors; licensee MDPI, Basel, Switzerland.