1. Department of Chemistry and Biochemistry; University of Alaska Fairbanks; Fairbanks; Alaska; USA
2. School of Fisheries and Ocean Sciences; University of Alaska Fairbanks; Fairbanks; Alaska; USA
3. Sarasota Dolphin Research Program; Chicago Zoological Society; c/o Mote Marine Laboratory; Sarasota, Florida; USA
4. Institute of Arctic Biology and Department of Veterinary Medicine; University of Alaska Fairbanks; Fairbanks; Alaska; USA