About the Authors

John P. A. Ioannidis

jioannid@stanford.edu

Affiliations Department of Medicine, Stanford University, Stanford, California, United States of America, Department of Epidemiology and Population Health, Stanford University, Stanford, California, United States of America, Department of Biomedical Data Science, Stanford University, Stanford, California, United States of America, Meta-Research Innovation Center at Stanford (METRICS), Stanford University, Stanford, California, United States of America

Kevin W. Boyack

Affiliation SciTech Strategies, Inc., Albuquerque, New Mexico, United States of America

Jeroen Baas

Affiliation Research Intelligence, Elsevier B.V., Amsterdam, the Netherlands

Competing Interests

I have read the journal's policy and the authors of this manuscript have the following competing interests. JPAI is a member of the editorial board of PLOS Biology. JB is an Elsevier employee. Elsevier runs Scopus and ICSR Lab, which is the source of this data, and also runs Mendeley Data, where the database is now stored.