1. Abel Rodriguez is Assistant Professor, Department of Applied Mathematics and Statistics, University of California, Santa Cruz, CA 95064 . David B. Dunson is Senior Investigator, Biostatistics Branch, National Institute of Environmental Health Science, Research Triangle Park, NC 27709 . Alan E. Gelfand is James B. Duke Professor, Institute of Statistics and Decision Sciences, Duke University, Durham, NC 27708 . This work is part of the first author's dissertation completed at Duke University and was...