MIT Imperial College London University of Oxford Harvard University University of Michigan University College London University of California at Berkeley Columbia University
oncology publications could not be reproduced. Bayer: 43 of 67 oncology & cardiovascular projects were based on contradictory results Dr. John Ioannidis: 432 publications purporting sex differences in hypertension, multiple sclerosis, or lung cancer. Only one data set was reproducible.
over which article types the company deems as “citable,” it became clear that the process of determining a journal's impact factor is unscientific and arbitrary.”