1. Department of Medicine, Division of Pulmonary, University of California, San Francisco, Critical Care, Allergy, & Sleep Medicine, San Francisco, CA 94709, USA
2. University of California, San Francisco, School of Medicine, San Francisco, CA 94709, USA
3. University of California, San Francisco, Library, Makers Lab, San Francisco, CA 94709, USA
4. Department of Biomedical Education & Anatomy, The Ohio State University College of Medicine, Columbus, OH 43210, USA
5. Department of Anatomy, University of California, San Francisco, San Francisco, CA 94709, USA
6. University of California, San Francisco, Center for Advanced 3D+ Technologies, San Francisco, CA 94709, USA
7. Department of Pediatrics, Division of Cardiology, University of California, San Francisco, CA 94709, USA
8. Department of Medicine, Division of Gastroenterology, University of California, San Francisco, CA 94709, USA