Buchner DA, Graboys TB, Johnson K, Mordin MM, Goodman L, Partsch DS, Goss TF. Development and validation of the ITG Health-Related Quality-of- Life Short-Form measure for use in patients with coronary artery disease. Integrated Therapeutics Group. Clin Cardiol. 2001 Aug;24(8):556-63.
Williams VSL, Jones LV, Tukey JW. Controlling error in multiple comparisons, with examples from state-to-state differences in educational achievement. J Educ Behav Stat. 1999;24(1):42-69. doi: 10.3102/10769986024001042