1. Department of Clinical SciencesUniversity of Texas Southwestern Medical Center Dallas Texas U.S.A.
2. Department of Methodology and StatisticsFaculty of Psychology and NeuroscienceMaastricht University Maastricht, The Netherlands
3. Department of StatisticsUniversity of California Irvine California U.S.A.
4. Department of StatisticsRice University Houston Texas U.S.A.