An acquaintance had contemplated a year ago attending this
Advanced Medicine for Remote Foreign Travel course in the UK. She had to cancel at the 11th hour, so no firsthand feedback to share, but I mention because it's in Europe, and sounds like it might meet your skill-level criteria. I see a course on 'expedition medicine' listed on their site as well.
Dan
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"Things that have never happened before happen all the time." — Scott Sagan, The Limits of Safety