Department of Statistics and Probability, Michigan State University, East Lansing, United States of America.|Department of Computational Mathematics, Science and Engineering, Michigan State University, East Lansing, United States of America.|Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry Ann Arbor, United States of America.|Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry Ann Arbor, United States of America.|Department of Statistics and Probability, Michigan State University, East Lansing, United States of America.