1 Division of Facial Plastic and Reconstructive Surgery, University of California San Francisco, San Francisco, California, USA.
2 School of Medicine, University of California San Francisco, San Francisco, California, USA.
3 Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, California.
4 Department of Surgery, Division of Trauma and Surgical Critical Care, Zuckerberg San Francisco General Hospital and Trauma Center, San Francisco, CA, University of California San Francisco, San Francisco, California, USA.