Article History
Received: 12 August 2021
Accepted: 13 October 2021
First Online: 8 November 2021
Declarations
:
: The authors declared that they have no conflict of interest.
: Because the focus of the present study is on textbooks and not human subjects, the University of Massachusetts-Boston IRB stated that this did not constitute human research. Although all information reported in this study is publicly available, the names of individual authors and editors are not listed in the figures or tables or on-line materials.