The appropriate use of diagnostic services. Part II. The case for fewer measurements of the plasma sodium concentration: costs and gains.
D001322:Autoanalysis / Q000706:statistics & numerical data; D019411:Clinical Laboratory Techniques / Q000706:statistics & numerical data*; D006296:Health Services / Q000191:economics*; D006300:Health Services Misuse / Q000191:economics*; D006801:Humans; D012964:Sodium / Q000097:blood; D006113:United Kingdom