Author Contributions: Dr Garbutt had full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis. Study concept and design: Garbutt, Brownstein, Klein, Waterman, Marcuse, Dunagan, Fraser, and Gallagher. Acquisition of data: Garbutt, Brownstein, Klein, Waterman, Fraser, and Gallagher. Analysis and interpretation of data: Garbutt, Klein, Waterman, Krauss, Marcuse, Hazel, Fraser, and Gallagher. Drafting of the manuscript: Garbutt, Brownstein, Klein, Waterman, Marcuse, Hazel, Dunagan, Fraser, and Gallagher. Critical revision of the manuscript for important intellectual content: Garbutt, Brownstein, Klein, Waterman, Krauss, Marcuse, Hazel, Dunagan, Fraser, and Gallagher. Statistical analysis: Krauss. Obtained funding: Brownstein, Marcuse, Dunagan, Fraser, and Gallagher. Administrative, technical, and material support: Klein, Marcuse, Hazel, Dunagan, and Fraser. Study supervision: Dunagan and Fraser.