Add "extra" info into AMA/JAMA citation

I would like to put a note about the study design of each paper at the end of each of my citations in my bibliography, which is AMA/JAMA style.
When I type things such as "retrospective cohort study" into the "Extra" box, however, it does not appear in my citations in my bibliography.
Is there a way to make this appear?

For example, I'd like it to come out like this, with "retrospective cohort review" at the end:
Burroughs, Thomas E., Jason P. Swindle, Paolo R. Salvalaggio, Krista L. Lentine, Steven K. Takemoto, Suphamai Bunnapradist, Daniel C. Brennan, and Mark A. Schnitzler. “Increasing Incidence of New-Onset Diabetes After Transplant Among Pediatric Renal Transplant Patients:” Transplantation 88, no. 3 (August 2009): 367–73. https://doi.org/10.1097/TP.0b013e3181ae67f0. (Retrospective cohort review)
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