title: [KV needs no proof of mailing from the postoffice].
authors.affiliation: .
authors.lastname: Mwo
mesh_terms: D004282:Documentation; D005858:Germany; D006801:Humans; D011177:Postal Service / Q000331:legislation & jurisprudence*; D011216:Practice Management, Medical / Q000331:legislation & jurisprudence*; D012051:Reimbursement Mechanisms / Q000331:legislation & jurisprudence*