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Samuelsen, S.O., Aanestad, H. and Skrondal, Anders (2007) Stratified case-cohort analysis of general cohort sampling designs. Scandinavian Journal of Statistics, 34 (1). pp. 103-119. ISSN 0303-6898
Samuelsen, S.O., Wisloff, T.F. and Skrondal, Anders (2006) A simple correction for ties when censoring times depend on covariates. Statistics in Medicine, 24 (20). pp. 3111-3121. ISSN 0277-6715