%0 Journal Article %A Weberpals, Janick %A Jansen, Lina %A Silversmit, Geert %A Verbeeck, Julie %A van der Geest, Lydia %A Vissers, Pauline AJ %A Zadnik, Vesna %A Brenner, Hermann %T Comparative performance of a modified landmark approach when no time of treatment data are available within oncological databases: exemplary cohort study among resected pancreatic cancer patients %J Clinical epidemiology %V Volume 10 %@ 1179-1349 %C Albany, Auckland %I Dove Medical Press %M DKFZ-2018-01400 %P 1109 - 1125 %D 2018 %F PUB:(DE-HGF)16 %9 Journal Article %U <Go to ISI:>//WOS:000443166000001 %$ pmid:30214315 %R 10.2147/CLEP.S160973 %U https://inrepo02.dkfz.de/record/136971