title: A response to Nathan Efron.
authors: Andrew
authors: A
authors: Gasson
mesh_terms: D000329:Advertising; D003261:Contact Lenses / Q000009:adverse effects / Q000639:trends*; D003316:Corneal Diseases / Q000209:etiology; D004517:Education, Professional; D004867:Equipment Design; D005141:Eyelid Diseases / Q000209:etiology; D006801:Humans; D038622:Internationality; D054158:Orthokeratologic Procedures; D055656:Prescriptions / Q000706:statistics & numerical data; D017755:Prosthesis Fitting / Q000639:trends; D006113:United Kingdom