 specialty, is presented in [Figure 0](#fig0-0000000000000000){ref-type="fig"}.  ![Authorship trends in medical peer-reviewed publications from 0000 to 0000 by specialty.](00.0000_0000000000000000-fig0){#fig0-0000000000000000}  ![Authorship trends in medical peer-reviewed publications from 0000 to 0000 by article type