Wiley, Statistics in Medicine, 12(17), p. 1357-1373, 1998
DOI: 10.1002/(sici)1097-0258(19980630)17:12<1357::aid-sim847>3.0.co;2-a
Wiley, Statistics in Medicine, 12(17), p. 1357-1373
DOI: 10.1002/(sici)1097-0258(19980630)17:12<1357::aid-sim847>3.3.co;2-1
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