| 1997 | Associate professor |
| 1993 | Postdoctor lecture qualification |
| 1990 -1992 | Research fellow ship (Erwin-Schrödinger grant): Pulmonary function testing in neonates and infants at risk for SIDS at the Childrens´s Hospital of Philadelphia, Philadelphia, USA |
| 1989 | Research fellow ship at the University Hospital Queen Fabiola in Brussel,Belgium |
| 1989 | Pediatric emergency physician |
| 1987 | Pediatrician |
| 1982 | General Practioner (GP) |
| 1979 | Medical Doctor(MD) |