About the Authors

Berit Kerner

bkerner@mednet.ucla.edu

Affiliation Department of Psychiatry, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, California, United States of America

Christophe G. Lambert

Affiliation Golden Helix Incorporated, Bozeman, Montana, United States of America

Bengt O. Muthén

Affiliation Graduate School of Education and Information Studies, Social Research Methodology Division, University of California Los Angeles, Los Angeles, California, United States of America

Competing Interests

Berit Kerner declares no conflict of interest. Bengt O. Muthén is the co-developer of the commercially available computer software Mplus used in the analysis, and Christophe G. Lambert is the co-investigator of the software SVS and the CEO of the software company GOLDEN HELIX. This does not alter the adherence to all the PLoS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: BK CGL BOM. Performed the experiments: BK CGL. Analyzed the data: BK CGL. Contributed reagents/materials/analysis tools: BK CGL BOM. Wrote the paper: BK CGL BOM. Designed the software used in the analysis: CGL BOM.