'In the 1940s Willem Kolff built a machine that could clean your blood if these failed'
kidneys
'40s TECH: In the 1940s Willem Kolff built a machine that could clean your blood if these failed
In the 1940s Willem Kolff built a machine that could clean your blood if these failed
In the 1940s Willem Kolff built a machine that could clean your blood if these failed
'40s TECH
kidneys
'40s TECH