1. College of Business; Oregon State University; Corvallis, Oregon U.S.A.
2. Department of Mathematical Sciences; Aalborg University; DK-9220 Aalborg Denmark
3. Epidemiology Program; University of Hawaii Cancer Center; Honolulu, Hawaii U.S.A.
4. Yale School of Public Health; New Haven, Connecticut U.S.A.
5. Department of Management Science; University of Miami; Coral Gables, Florida U.S.A.