1. Division of General Internal Medicine, Department of Medicine, University of Florida College of Medicine, Gainesville, Florida, USA.
2. Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
3. Department of Biostatistics and Data Science, University of Kansas Medical Center, Kansas City, Kansas, USA.
4. Department of Internal Medicine, Clínica Planalto, Lisbon, Portugal.
5. Department of Neonatology, East-Tallinn Central Hospital, Tallinn, Estonia.
6. Academy of Breastfeeding Medicine, Bühl, Germany.
7. Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.