Potential importance of residual confounding in systematic reviews of observational studies: Answer to Mathur and VanderTweele

oleh: Jos H. Verbeek, Paul Whaley, Rebecca L. Morgan, Kyla W. Taylor, Andrew A. Rooney, Lukas Schwingshackl, Jan L. Hoving, S. Vittal Katikireddi, Beverley Shea, Reem A. Mustafa, M.Hassan Murad, Holger J. Schünemann