Mortality in systemic sclerosis: An International meta-analysis of individual patient data

John P.A. Ioannidis, Panayiotis G. Vlachoyiannopoulos, Anna Bettina Haidich, Thomas A. Medsger, Mary Lucas, Clement J. Michet, Masataka Kuwana, Hidekata Yasuoka, Frank Van Den Hoogen, Liane Te Boome, Jacob M. Van Laar, Nicolette L. Verbeet, Marco Matucci-Cerinic, Athanasios Georgountzos, Haralampos M. Moutsopoulos