1. Department of Chemistry; Bucknell University; Lewisburg PA USA
2. Merck Research Laboratories, Analytical Research and Development; Merck and Co., Inc.; Kenilworth NJ USA
3. Complex Carbohydrate Research Center; University of Georgia; Athens GA USA
4. Department of Chemistry; University of North Carolina at Wilmington; Wilmington NC USA
5. Department of Chemistry & Biochemistry; Seton Hall University; South Orange NJ USA