1. Department of Anesthesia, Critical Care, and Pain Medicine, University of Texas Health Science Center at Houston, Houston, TX
2. Department of Surgery, Memorial Sloan Kettering Cancer Center, New York City, NY
3. Ariadne Labs, Harvard T. H. Chan School of Public Health, Boston, MA
4. Treadwell Library, Massachusetts General Hospital, Boston, MA
5. Department of Surgery, University of Calgary, Calgary, Alberta, Canada