Addison's Disease - according to Kenneth Chalmers (http://www.amazon.co.uk/Bela-Bartok-20th-Century-Composers/dp/0714847704/ref=sr_1_22?ie=UTF8&s=books&qid=1247740960&sr=8-22)
Bela Gold died in 2012.
Bela Berger died in 2005.
Bela Marsh died in 1869.
Bela Grunberger died in 2005.
Bela Hubbard died on 1896-06-13.
Bela 'Bert' Grof died in 2011.
Bela Bates Edwards died in 1852.
Bela Pratt died on 1917-05-17.
Bela Palfi died on 1995-09-09.
Bela Wellman died on 1887-01-31.
Bela Borsody Bevilaqua died in 1962.
Bela Čikoš Sesija died in 1931.