In the United States, “Opt-Out” States Show No Increase in Access to Anesthesia Services for Medicare Beneficiaries Compared with Non–“Opt-Out” States Sun, Eric C.; Miller, Thomas R.; Halzack, Nicholas M. Sun, Eric C.; Miller, Thomas R.; Halzack, Nicholas M. Less A & A Case Reports. 6(9):283-285, May 1, 2016. Abstract Abstract Favorites PDF Get Content & Permissions Buy