1. a Public Health Department , Southern Connecticut State University , New Haven , CT , 06515
2. b Department of Mathematics , Southern Connecticut State University , New Haven , CT , 06515
3. c Public Health Department , Southern Connecticut State University , New Haven , CT , 06515
4. d CT AIDS Education Training Center , Yale University , New Haven , CT , 06536
5. e Public Health Department , Southern Connecticut State University , New Haven , CT , 06515