I was able to find the references (including photos of the mentioned forearms) on PubMed and the RIMJ after a quick search. Paraquat is nasty stuff.
- [0] https://pubmed.ncbi.nlm.nih.gov/33769492/
- [1] http://www.rimed.org/rimedicaljournal/2023/06/2023-06-40-ima... (via https://rimedicalsociety.org/rhode-island-medical-journal/)