Mac - welcome to the topic. Good to see a 'medic' here. I have not seen much out of the US, but a catalogue of 'events' (Europe and Aus only, I think) back to 1997 is
here
Any professional medical interest welcome. There has been a poster on PPRune called 'aerotoxic' who is, I believe, involved with the site linked. He now shows as 'active' but there are no posts listed in search, so I guess the mods must have taken a dislike to his posts.