Wiley, Statistics in Medicine, 9(16), p. 981-991, 1997
DOI: 10.1002/(sici)1097-0258(19970515)16:9<981::aid-sim510>3.0.co;2-n
Wiley, Statistics in Medicine, 9(16), p. 981-991
DOI: 10.1002/(sici)1097-0258(19970515)16:9<981::aid-sim510>3.3.co;2-e
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