MDPI (Multidisciplinary Digital Publishing Institute) is an academic open-access publisher with headquarters in Basel, Switzerland. Additional offices are located in Beijing and Wuhan (China), Barcelona (Spain) and Belgrade (Serbia). MDPI publishes 189 diverse peer-reviewed, scientific, open access, electronic journals. As a pioneer of academic open access publishing, we serve the scientific community since 1996. Our aim is to foster scientific exchange in all forms, across all disciplines.