The researchers mailed a survey to the 1000 doctors selected from the AMA list. The survey asked the doctors about themselves and their attitudes toward the death penalty. The survey also asked the doctors whether they would be willing to do each of the following 10 things: select injection sites, start intravenous lines for lethal injection, give the injection, monitor the prisoner during the injection, pronounce the prisoner dead, inspect the injection devices, supervise lethal injection personnel, order the drugs used in lethal injection for the prison pharmacy, prescribe tranquilizers for the prisoner the night before the execution, and sign the death certificate. They then calculated how often doctors were willing to do the first eight of these activities, which are prohibited by the AMA.