1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Michigan, Ann Arbor, MI, USA. valleyt@med.umich.edu.
2 Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor, MI, USA. valleyt@med.umich.edu.
3 Center for Bioethics and Social Sciences in Medicine, University of Michigan, Ann Arbor, MI, USA. valleyt@med.umich.edu.
4 Department of Critical Care Medicine, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
5 Quality and Patient Safety Department, Rede Ímpar, São Paulo, SP, Brazil.