Summary responses to a survey among Dutch experimental animal researchers.

†Questions are numbered according to the survey in which questions 1 to 5 enquired after respondents’ background characteristics (Appendix S2).¶Between 17 March and 30 July 2011, 474 laboratory animal researchers returned the survey. Fifty-one respondents did not fill in the survey completely. Of these, we excluded 20 because of absence of (at least) their background data. The variation in the total number of 454 respondents across table 1 is caused by the other 31 respondents.§The group that (co-)authored 0–5 studies was excluded from this row because very junior investigators very often had either zero or 100 percent of their papers publish.