title: Tracking our preferences: a 20-year view.
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Obstbaum
mesh_terms: D003261:Contact Lenses / Q000706:statistics & numerical data; D006801:Humans; D013508:Ophthalmologic Surgical Procedures / Q000706:statistics & numerical data; D010818:Practice Patterns, Physicians'; D054140:Refractive Surgical Procedures