Strengthening Health Services Research Using Target Trial Emulation: An Application to Volume-Outcomes Studies. Author(s): Madenci AL, Wanis KN, Cooper Z, Haneuse S, Subramanian SV, Hofman A, Hernán MA|Journal: Am J Epidemiol|PMID: 34089045| August 2021 The number of operations that surgeons have previously performed is associated with their patients' outcomes. However, this association may not…