1. Department of Mathematics, Computer Science and Physics, University of Udine, Udine 33100, Italy
2. Università degli Studi di Napoli Federico II, Napoli 80138, Italy
3. Department of Chinese and Bilingual Studies, The Hong Kong Polytechnic University, Hung Hom 999077, Hong Kong
4. Decision Science and Advanced Analytics for MAPV & RA, Bayer, Bayer Pharmaceuticals, Whippany, NJ 07981-1544, USA