Thanks for your reply and the information about Virgil McCollum and Maj. Smothers. McCollum, like Smothers, was sent to a so-called "hospital" after they arrived in Japan. Of 110 sent there, only 36 survived the war. You may know this, but if not, a deposition by Maj. McCollum is available online:
http://www.oryokumaru.net/amstatements.htm
Perhaps the best description of events at the "Moji Hospital" is from Cecil Peart. His diary can be found here: http://www.loc.gov/vets/stories/pow-japan.html