We acknowledge with great dismay and sorrow the death of Em. Professor Jan G. van den Tweel (Fig. 1) on February 14, 2020. Shortly before his death, he attended our Working Group Meeting of the European Society of Pathology (ESP) in Vienna. He gave us a lecture about the importance of Gerard van Swieten—the manuscript of his talk is published in this special issue of the Wiener Medizinische Wochenschrift.
