1. World Health Organization (2020) Osteoarthritis. http://www.who.int/chp/topics/rheumatic/en/. Accessed 30 April 2020
2. DeHaan MN, Guzman J, Bayley MT, Bell MJ (2007) Knee osteoarthritis clinical practice guidelines-how are we doing? J Rheumatol 4(10):2099–2105
3. National Health Insurance Administration, Ministry of Health and Welfare (2018) Analysis of drug usage 2016, 2017, 2018. https://www.nhi.gov.tw/Content_List.aspx?n=5AA7CAFFF61CB16D&topn=3FC7D09599D25979. Accessed 10 Oct 2021
4. Maille M, Statler IC, & Chaudron L (2005) An application of FCA to the analysis of aeronautical incidents, In: Ganter B, and Godin R (Eds.) Formal Concept Analysis, Third International Conference, ICFCA 2005, 145-161, Springer Berlin, Germany
5. Banfield JD, Raftery AE (1993) Model-based Gaussian and non-Gaussian clustering. Biometrics 49:803–821