title: [Problems of the bioprosthesis (author's transl)].
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006350:Heart Valve Prosthesis; D006351:Heart Valves / Q000637:transplantation*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014183:Transplantation, Heterologous