1 Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, Box 0560, San Francisco, CA, 94143, USA.
2 Department of Radiology, The University of Chicago, Chicago, IL, USA.
3 Department of Pediatrics, Division of Pediatric Critical Care, UCSF Benioff Children's Hospital, University of California San Francisco, San Francisco, CA, USA.
4 Philip R. Lee Institute for Health Policy Studies, University of California San Francisco, San Francisco, CA, USA.
5 Department of Diagnostic, Molecular and Interventional Radiology, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
6 Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, USA.
7 Radiation Epidemiology Branch, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
8 Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
9 Department of Epidemiology and Biostatistics, University of California San Francisco, 550 16th Street, Box 0560, San Francisco, CA, 94143, USA. [email protected].
10 Philip R. Lee Institute for Health Policy Studies, University of California San Francisco, San Francisco, CA, USA. [email protected].
11 Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco, San Francisco, CA, USA. [email protected].