The unsound barrier.
Seymour
J
J
D000368:Aged; D000369:Aged, 80 and over; D003327:Coronary Disease / Q000534:rehabilitation*; D006801:Humans; D018579:Patient Selection; D011287:Prejudice; D012046:Rehabilitation / Q000458:organization & administration*; D013222:State Medicine; D006113:United Kingdom