Improving data quality in observational research studies: Report of the Cure Glomerulonephropathy (CureGN) network oleh Brenda W. Gillespie, Louis-Philippe Laurin, Dawn Zinsser, Richard Lafayette, Maddalena Marasa, Scott E. Wenderfer, Suzanne Vento, Caroline Poulton, Laura Barisoni, Jarcy Zee, Margaret Helmuth, Francesca Lugani, Margret Kamel, Peg Hill-Callahan, Stephen M. Hewitt, Laura H. Mariani, William E. Smoyer, Larry A. Greenbaum, Debbie S. Gipson, Bruce M. Robinson, Ali G. Gharavi, Lisa M. Guay-Woodford, Howard Trachtman