We have lost one of the greatest founders of modern stereology, Hans Jørgen Gottlieb Gundersen. As a professor at the Stereological Research Laboratory at Aarhus University, he discovered a number of revolutionary methods for accurately determining the number and size of cells and structures, based on spatial sampling principles: disector, fractionator, proportionator, nucleator, rotator, point-sampled intercepts, orthogonal intercepts, vertical sections, isector, and 2D unbiased counting frame. As a true stereologist, Hans Jørgen never counted everything, he estimated the structural quantities in a sample of the whole organ/structure and therefore he also contributed greatly to the estimation of the error variance - coefficient of error - of the estimate. He economized sampling in the famous paper 'Do more less well!'.

The obituary was published in Image Analysis & Stereology in his memory:

Hans Jørgen Gottlieb Gundersen at the 4th International Conference on Stereology and Stochastic Geometry (Bern, 1987)
Hans Jørgen Gottlieb Gundersen at the 4th International Conference on Stereology and Stochastic Geometry (Bern, 1987)

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