B. Langholz, und D. Richardson. American journal of epidemiology, 171 (3):
377-83(Februar 2010)5491<m:linebreak></m:linebreak>JID: 7910653; aheadofprint;.
S. Geneletti, S. Richardson, und N. Best. Biostatistics (Oxford, England), 10 (1):
17-31(Januar 2009)4716<m:linebreak></m:linebreak>GR: Department of Health/United Kingdom; JID: 100897327; 2008/05/14 aheadofprint; ppublish;.