title: [What is established treatment?].
authors: Michael
authors: M
authors: Bretthauer
authors: Charlotte
authors: C
authors: Haug
mesh_terms: D002986:Clinical Trials as Topic / Q000941:ethics; D004059:Diffusion of Innovation; D004282:Documentation; D032984:Ethics, Research; D019317:Evidence-Based Medicine; D019918:Heart Valve Prosthesis Implantation / Q000379:methods; D006801:Humans; D011664:Pulmonary Valve