We were asked to think about a disease specific patient oriented app, and its professional counter part. It resulted in a 100+ screens prototype user tested on patient & HCPs in 3 markets. 
Design deliverables: VOB/VOC, Storyboarding, Hi-level Prototyping, User tests 
Key learning: Designing with 3 different types of actors (HCPs, Patients, Business) is a perilous but such interesting exercise.