title: Adjusting for calendar time in a TND influenza study.
authors.affiliation: Abbott Established Pharmaceuticals Division,Abbott Healthcare Products B.V., C.J. van Houtenlaan 36,1381 CP Weesp,The Netherlands.
authors.forename: Jozef J P
authors.initials: JJ
authors.lastname: Nauta
mesh_terms: D006801:Humans; D007251:Influenza, Human