Author Contributions:Study concept and design: Gopinath, Schneider, and Mitchell. Acquisition of data: Mitchell. Analysis and interpretation of data: Gopinath, Rochtchina, Leeder, and Mitchell. Drafting of the manuscript: Gopinath. Critical revision of the manuscript for important intellectual content: Rochtchina, Wang, Schneider, Leeder, and Mitchell. Statistical analysis: Rochtchina. Obtained funding: Mitchell. Administrative, technical, and material support: Leeder. Study supervision: Wang, Schneider, and Mitchell.