Author Contributions: Dr Lippa 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: Lippa, Stutzbach, Lee, and Trojanowski. Acquisition of data: Rosso, Stutzbach, Lee, and Trojanowski. Analysis and interpretation of data: Lippa, Rosso, Stutzbach, Neumann, Lee, and Trojanowski. Drafting of the manuscript: Lippa, Lee, and Trojanowski. Critical revision of the manuscript for important intellectual content: Rosso, Stutzbach, Neumann, Lee, and Trojanowski. Obtained funding: Lee and Trojanowski. Administrative, technical, and material support: Lippa, Stutzbach, and Neumann. Study supervision: Lippa.