[Nolite nos contingere. The small difference as exemplified with contact lenses].
Mehrle
G
G
D003261:Contact Lenses / Q000191:economics / Q000600:supply & distribution*; D005858:Germany; D006801:Humans; D007883:Legislation, Medical; D009885:Ophthalmology / Q000331:legislation & jurisprudence*; D009907:Optometry / Q000331:legislation & jurisprudence*; D010818:Practice Patterns, Physicians' / Q000331:legislation & jurisprudence*