TOP3A amplification and ATRX inactivation are mutually exclusive events in pediatric osteosarcomas using ALT oleh Alexandre deNonneville, Sébastien Salas, François Bertucci, Alexander P Sobinoff, José Adélaïde, Arnaud Guille, Pascal Finetti, Jane R Noble, Dimitri Churikov, Max Chaffanet, Elise Lavit, Hilda A Pickett, Corinne Bouvier, Daniel Birnbaum, Roger R Reddel, Vincent Géli