Health Science, initially.
Sounds interesting. What's it all about? (I'm aware I could just google it, but in the interest of social interaction I'll ask you instead

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Personally given the adults involved I'd recommend dose of 12gauge mouthwash 
Ahh oral hygiene... One of my placements was on an acute neuro ward. Half the people on that ward had almost completely unintelligible speech until I removed all the crap from their mouths, and all of a sudden they were much easier to understand. Pretty shocking stuff
