Zocht je misschien: subtracting?
Distinguishing happiness and meaning in life from depressive symptoms: A GWAS-by-subtraction study in the UK Biobank
de Vries, Lianne P.; Demange, Perline A.; Baselmans, Bart M. L. (Faculteit Techniek (Ft)); Vinkers, Christiaan H.; Pelt, Dirk H. M.; Bartels, Meike
The don't know option in progress testing
Ravesloot, C.J.; Van der Schaaf, M.F.; Muijtjens, A.M.M.; Haaring, C.; Kruitwagen, C.L.J.J.; Beek, F.J.A.; Bakker, J.; Van Schaik, J.P.J.; Ten Cate, Th.J.