1. Department of Neonatology, Affiliated Foshan Maternity Child Healthcare Hospital Southern Medical University Foshan China
2. Department of Neonatology Foshan Maternity Child Healthcare Hospital Foshan China
3. Section for Comparative Pediatrics and Nutrition Department of Veterinary and Animal Sciences Faculty of Health and Medical Sciences University of Copenhagen Copenhagen Denmark
4. National Human Milk Bank Hvidovre Hospital Copenhagen Denmark