Expert panel process to optimise the design of a randomised controlled trial in chronic rhinosinusitis (the MACRO programme) oleh Helen Blackshaw, Jane Vennik, Carl Philpott, Mike Thomas, Caroline Eyles, James Carpenter, Caroline S. Clarke, Steve Morris, Anne Schilder, Valerie Lund, Paul Little, Stephen Durham, Spiros Denaxas, Elizabeth Williamson, David Beard, Jonathan Cook, Steffi Le Conte, Kim Airey, Jim Boardman, Claire Hopkins