Author Contributions: Dr Fisher had full access to all of 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: Fisher, Kuo, and Graham. Acquisition of data: Fisher and Ostir. Analysis and interpretation of data: Fisher, Kuo, and Ottenbacher. Drafting of the manuscript: Fisher and Ostir. Critical revision of the manuscript for important intellectual content: Fisher, Kuo, Graham, Ottenbacher, and Ostir. Statistical analysis: Fisher and Kuo. Obtained funding: Ottenbacher and Ostir. Study supervision: Ostir.