BarnettR. N.Medical significance of laboratory results. Amer. J. clin. Path.50 (1968) 671.
2.
College of American Pathologists Surveys 1963–1968: 231 N. Michigan Ave., Chicago, Illinois 60601, U.S.A.
3.
SkendzelL. P.MuellingR. J.Report on small hospital laboratories. 1966 Survey of the College of American Pathologists. New Eng. J. Med.277 (1967) 180.
4.
SkendzelL. P.YoudenW. J.Graphic display of interlaboratory test results. Amer. J. clin. Path.51 (1969) 161.
5.
Standards Committee, College of American Pathologists, Guidelines for evaluating laboratory performance in survey and proficiency testing programs. Amer. J. clin. Path.49 (1968) 457.
6.
YoudenW. J.Statistical Techniques for Collaborative Tests, Association of Official Analytical Chemists, Box 540, Benjamin Franklin Station, Washington, D.C., 20044. (Price $2.00).