The GuLF STUDY: A Prospective Study of Persons Involved in the Deepwater Horizon Oil Spill Response and Clean-Up | Environmental Health Perspectives | Vol. 125, No. 4 January 4, 2020 disappear Source: The GuLF STUDY: A Prospective Study of Persons Involved in the Deepwater Horizon Oil Spill Response and Clean-Up | Environmental Health Perspectives | Vol. 125, No. 4