Limit the number of grants per person.
Sachs
F
F
D005380:Financing, Government; D005381:Financing, Organized / Q000191:economics / Q000706:statistics & numerical data; D009316:National Institutes of Health (U.S.); D012106:Research / Q000191:economics* / Q000706:statistics & numerical data; D012109:Research Support as Topic / Q000191:economics / Q000706:statistics & numerical data; D014481:United States