1. Department of Medicine, University of California, San Diego, La Jolla, California, USA.
2. Department of Pediatrics, and University of California, San Diego, La Jolla, California, USA.
3. UC Health Milk Bank, University of California, San Diego, La Jolla, California, USA.
4. Human Milk Institute (HMI), University of California, San Diego, La Jolla, California, USA.
5. Department of Pathology, University of California, San Diego, La Jolla, California, USA.
6. VA San Diego Healthcare System, San Diego, California, USA.
7. Larsson-Rosenquist Foundation Mother-Milk-Infant Center of research Excellence (MOMI CORE), University of California, San Diego, La Jolla, California, USA.