European Journal of Epidemiology, 32(10), 931-938. Springer Netherlands European Journal of Epidemiology European Journal of Epidemiology, 2017, 32 (10), pp.931-938. ⟨10.1007/s10654-017-0320-5⟩ European Journal of Epidemiology, Springer Verlag, 2017, 32 (10), pp.931-938. ⟨10.1007/s10654-017-0320-5⟩