1. Department of Pediatric Pneumology & Allergy, University Children's Hospital Regensburg (KUNO), of the University of Regensburg & the Order of St. John at the St. Hedwig Hospital, Regensburg, Germany
2. Science & Innovation Campus Regensburg (WECARE) of the Order of St. John at the St. Hedwig Hospital, Regensburg, Germany
3. University Children's Hospital Regensburg (KUNO) of the University of Regensburg & the Order of St. John at the St. Hedwig Hospital, Regensburg, Germany
4. Institute of Social Medicine & Health Systems Research, Otto von Guericke University, Magdeburg, Germany
5. Department of Obstetrics & Gynaecology of the University of Regensburg & the Order of St. John at the St. Hedwig Hospital, Regensburg, Germany