@article{RN437,
   author = {Valkhoff, V. E. and Coloma, P. M. and Masclee, G. M. C. and Gini, R. and Innocenti, F. and Lapi, F. and Molokhia, M. and Mosseveld, M. and Nielsson, M. S. and Schuemie, M. and Thiessard, F. and Van Der Lei, J. and Sturkenboom, M. C. J. M. and Trifirò, G.},
   title = {Validation study in four health-care databases: Upper gastrointestinal bleeding misclassification affects precision but not magnitude of drug-related upper gastrointestinal bleeding risk},
   journal = {Journal of Clinical Epidemiology},
   volume = {67},
   number = {8},
   pages = {921-931 , DOI = 10.1016/j.jclinepi.2014.02.020},
   url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84902887264&doi=10.1016%2fj.jclinepi.2014.02.020&partnerID=40&md5=f7a1ed3aaa33d1f7b99c2c338cb60985},
   year = {2014},
   type = {Journal Article}
}

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