@article{FortmannDammannHumbergetal.2021,
  author    = {Ingmar Fortmann and Marie-Theres Dammann and Alexander Humberg and Bastian Siller and Guido Stichtenoth and Geraldine Engels and Janina Marißen and Kirstin Faust and Kathrin Hanke and Sybelle Goedicke-Fritz and Christoph Derouet and Sascha Meyer and Regine Stutz and Elisabeth Kaiser and Egbert Herting and Wolfgang G{\"o}pel and Christoph H{\"a}rtel and Michael Zemlin},
  title     = {Five year follow up of extremely low gestational age infants after timely or delayed administration of routine vaccinations},
  journal   = {Vaccines},
  volume    = {9},
  number    = {5},
  doi       = {10.3390/vaccines9050493},
  year      = {2021},
}