title: [If you want to revoke an unconditional waiver, you must face high hurdles].
authors.forename: Ralph
authors.initials: R
authors.lastname: Steinbrück
mesh_terms: D005858:Germany; D033161:Government Regulation; D008007:Licensure, Medical / Q000331:legislation & jurisprudence*; D010820:Physicians / Q000331:legislation & jurisprudence*; D011331:Private Practice / Q000331:legislation & jurisprudence*