The issue focused on whether Spence's statement was based on research he had done in 2012, which found that medical researchers who study marijuana studies were more likely to report scientific literature studies they did not create.

In an interview with Science magazine last year, Spence said that research researchers should have the right to discuss science behind their research before publication. "It is morally wrong for scientists to provide academic authors and academics with research studies which are speculative or scientifically challenged," he wrote.

But medical researchers say