scientific article
author: Paolo Boffetta, David Zaridze, Paul Brennan, Sérgio Koifman, Victor Wünsch-Filho, Elena Matos, Tarik Gheit, Massimo Tommasino, Alexander W Daudt, Maria Paula Curado, Thomas Vaissiere, Cyrille Cuenin, Zdenko Herceg, Bakary S Sylla, Rosita Accardi
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