What is the fine-grained topic of the following text: GRAND RAPIDS, Mich. (Dec. 21, 2018) — Van Andel Research Institute-affiliated scientists Peter W. Laird, Ph.D., Stephen B. Baylin, M.D., and H. Eric Xu, Ph.D., are included in this year’s Highly Cited Researchers list, which identifies scientists who have published multiple papers ranking in the top 1 percent of citations by field and year worldwide. Only return the topic.
Van Andel Research Institute-affiliated scientists inclusion in the Highly Cited Researchers list.