title: [What to do when patients change the health insurance group].
authors.forename: Helmut
authors.initials: H
authors.lastname: Walbert
mesh_terms: D058006:General Practice / Q000331:legislation & jurisprudence*; D005858:Germany; D006801:Humans; D007343:Insurance Carriers / Q000331:legislation & jurisprudence*; D019458:Insurance Coverage / Q000331:legislation & jurisprudence*; D009313:National Health Programs / Q000331:legislation & jurisprudence*