The Comparative Effectiveness of Innovative Treatments for Cancer (CEIT-Cancer) project: Rationale and design of the database and the collection of evidence available at approval o... by Ladanie, A, Speich, B, Naudet, F, Agarwal, A, Pereira, T, Sclafani, F, Martin-Liberal, J, Schmid, T, Ewald, H, Ioannidis, J, Bucher, H, Kasenda, B, Hemkens, L