2020a-981 alan aspectreligieux casestudies conscientiousrefusaltotreat droit ethics éthiquemédicale étudesdecas grande-bretagne greatbritain jehovah'switnesses jurisprudence legislation législation medical medicalcare medicalethics medicallaw medicallawsandlegislation medicine médecine religion religionandlaw religionandmedicine religiousaspects témoinsdejéhovah treatmentrefusal w33fa1