Editing Maria Callas (section)

===Fussi and Paolillo report===
A 2010 study by Italian vocal researchers Franco Fussi and Nico Paolillo revealed Callas was very ill at the time of her death and her illness was related to her vocal deterioration. According to their findings, presented at the [[University of Bologna]] in 2010, Callas had [[dermatomyositis]], a rare, connective tissue disease that causes a failure of the muscles and ligaments, including the larynx. They believe she was showing signs of this disease as early as the 1960s. Fussi and Paolillo cite an initial report by physician Mario Giacovazzo, who in 2002 revealed he had diagnosed Callas with dermatomyositis in 1975. Treatment included corticosteroids and immunosuppressive agents, which affect heart function.{{citation needed|date=December 2015}}

At an event hosted by the journal ''Il Saggiatore Musicale'', Fussi and Paolillo presented documentation showing when and how her voice changed over time. Using modern audio technology, they analyzed live Callas studio recordings from the 1950s through the 1970s, looking for signs of deterioration. Spectrographic analysis showed that she was losing the top half of her range. Fussi observed video recordings in which Callas's posture seemed strained and weakened. He felt that her drastic weight loss in 1954 further contributed to reduced physical support of her voice.{{citation needed|date=December 2015}}

Fussi and Paolillo also examined restored footage of the infamous 1958 ''Norma'' "walkout" in Rome, which led to harsh criticism of Callas as a temperamental superstar. By applying spectrographic analysis to that footage, the researchers observed her voice was tired and she lacked control and that she had bronchitis and tracheitis as she claimed, and that the dermatomyositis was already causing her muscles to deteriorate.<ref>{{cite web|url=http://www.lastampa.it/2010/12/21/esteri/lastampa-in-english/opera-legend-maria-callas-didn-t-die-of-a-broken-heart-z9QHOp38idfnQIS50pStjI/pagina.html|title=Opera Legend Maria Callas Didn't Die Of A Broken Heart|website=[[La Stampa]]|first=Giangiorgio|last=Satragni|date=December 21, 2010|access-date=April 6, 2013|archive-url=https://web.archive.org/web/20131203031933/http://www.lastampa.it/2010/12/21/esteri/lastampa-in-english/opera-legend-maria-callas-didn-t-die-of-a-broken-heart-z9QHOp38idfnQIS50pStjI/pagina.html|archive-date=December 3, 2013|url-status=dead}}</ref>