Endoscopic research in America (revisited).
Sivak
Michael V
MV
D002017:Budgets; D016099:Endoscopy, Gastrointestinal / Q000191:economics*; D005380:Financing, Government / Q000639:trends*; D006801:Humans; D009316:National Institutes of Health (U.S.) / Q000191:economics; D012109:Research Support as Topic / Q000191:economics* / Q000639:trends; D014481:United States