1. Medical Engineering Design Research Group (MEDRG), Nottingham Trent University, Nottingham NG11 8NS, UK
2. R&D Innovation Team, Baxter Medical Systems GmbH+ Co. KG, 07318 Saalfeld, Germany
3. Smart Wearable Research Group, Nottingham Trent University, Nottingham 03290, UK
4. Inter-Spitzen AG, Business Unit FRTI, St. Gallen 9006, Switzerland
5. Product Design Department, Nottingham Trent University, Nottingham 03290, UK