Robbert Dijkgraaf
Robertus Henricus "Robbert" Dijkgraaf FRSE ( [ ]; born 24 January 1960) is a Dutch theoretical physicist and string theorist. He is the director and Leon Levy professor at the Institute for Advanced Study in Princeton, New Jersey, and a tenured professor at the University of Amsterdam.
Hans Clevers
Hans Clevers began studying biology at the University of Utrecht in 1975, then began studying medicine as well. He spent part of his seven years of biological study in Nairobi, Kenya, and also, in his words, “did some rotations” at the National Institutes of Health in Bethesda. He received an M.Sc. in Biology in 1982, an M.D. in 1984 and a Ph.D. in 1985. For his Ph.D. he studied under Rudy Ballieux. From 1986 to 1989 he did postdoctoral work under the direction of Cox Terhorst at the Dana-Farber Cancer Institute at Harvard University. It was there that Clevers cloned the T-cell gene CD3 epsilon. After his stay at Harvard, he returned to the Netherlands to start his own research group at the department of Clinical immunology of the UMC Utrecht. Describing his path to his career as a medical researcher, Clevers said the following: “There was a bit of an awkward route. I actually studied biology first, and then took up medical school at about the same time...Did two separate studies, graduated from both, was going to be a pediatrician, then decided to spend a year in science, liked it so much more that I realized I didn’t – I shouldn’t become a real doctor. I was not good with – I liked patients, but I was a little bit impatient with them. I then decided to go for a post-doc at Boston to Dana Farber, where I really learned the trade.”
Hans Clevers
In 1991 Clevers became a professor of immunology at the University Medical Center in Utrecht. Since 2002 he has been a professor of molecular genetics at UMC Utrecht and Utrecht University. Also in 2002 he became director of the Hubrecht Institute for Developmental Biology and Stem-Cell Research at the Royal Netherlands Academy of Arts and Sciences. Clevers discovered similarities between the normal renewal of intestinal tissue and the onset of colon cancer. In 2008 and 2015 he received ERC Advanced Investigator Grants. In 2013 he was awarded the $3 million Breakthrough Prize in Life Sciences for his work. In March 2012, Clevers, who since 2000 had been a member of the Royal Netherlands Academy of Arts and Sciences, was elected its president, succeeding Robbert Dijkgraaf. In connection with his election to this position, he resigned as director from the Hubrecht Institute but kept his research lab there. From 2012-2015 he was President of the Royal Netherlands Academy of Arts and Sciences (KNAW). From 2015-2019 he was director Research of the Princess Maxima Center for paediatric oncology, located on the Utrecht Science Park close to the Hubrecht where he maintains his lab. Presently, Clevers leads two research group, one at the Hubrecht Institute as well as at the Princess Maxima Center.

Question: Hans Clevers was elected as president of the Royal Netherlands Academy of Arts and Sciences, succeeding a dutch mathematical physicist and string theorist, who is a tenured professor where?
Answer: University of Amsterdam