title: Presumed consent.
mesh_terms: D000818:Animals; D035843:Biomedical Research; D002648:Child; D006801:Humans; D007258:Informed Consent / Q000941:ethics; D016377:Organ Transplantation / Q000706:statistics & numerical data; D012042:Registries; D034421:Sus scrofa; D023822:Tissue Engineering / Q000639:trends; D009927:Tissue and Organ Procurement / Q000941:ethics / Q000706:statistics & numerical data* / Q000639:trends; D014852:Wales