between 2001 and 2010, during which time the state was involved in several lawsuits over their lethal injection protocols, state of oklahoma stopped autopsying the prisoners who they were killing. not one in the whole decade. for more than ten years, during which time the state altered its lethal injection protocol three times, the state of oklahoma has done nothing in terms of physical examination to actually see how it is working or what it is doing in the process of killing people. it's all too secret. joining us now, ziva branstetter for oklahoma's "tulsa world" newspaper. thank you for being with us. >> thanks, rachel. >> let me ask you an the autopsy issue. oklahoma used to do autopsy of prisoners it killed as a matter of course and then they just stopped. why did they stop? and what medical information were you able to access to do this story given that the autopsies stopped for so long?