Some people in the medical community, do not think that cannibalism was still practiced when Gajdusek did his research. Willam Arens, an anthropologist, says that Gajdusek never saw cannibalism himself. Researchers who worked with the Fore in the 1950s say that cannibalism was stopped in 1948. This was almost a decade before Gajdusek went to New Guinea. Many other researchers, including Robert Klitzman, S. Lindenbaum, R. Glasse, and researchers at the Papua New Guinea Institute of Medical Research have made reports that say that the cannibalism still happened.