The interhospital transfer network for very low birth weight infants in the United States Munik Shrestha, Samuel V. Scarpino, Erika M. Edwards, Lucy T. Greenberg and Jeffrey D. Horbar EPJ Data Sci., 7 1 (2018) 27 Published online: 10 August 2018 DOI: 10.1140/epjds/s13688-018-0155-7