1. 1) Japan Kampo Medicine Manufactures Association. “Kampoyaku Shoho Jittaichosa, Summary Report 2011.”: 〈http://www.nikkankyo.org/aboutus/investigation/pdf/jittaichousa2011.pdf〉, cited 20 May, 2017.
2. 2) Japan Kampo Medicine Manufactures Association. “Report on an investigation of annual crude drug usage in 2008.”: 〈http://www.nikkankyo.org/investigation/pdf/shiyouryouchousa.pdf〉 cited 20 May, 2017.
3. 3) Japan Kampo Medicine Manufactures Association. “Report on an investigation of price index of crude drug 2014.”: 〈http://www.nikkankyo.org/aboutus/investigation/kakakuchousa/kakaku-chousa_003.html〉, cited 20 May, 2017.
4. 4) Ministry of Agriculture, Forestry and Fisheries. “MAFF-aided projects for the establishment of producing center of medicinal plants.”: 〈http://www.maff.go.jp/j/keikaku/pdf/yakuyou_sesaku1.pdf〉, cited 20 May, 2017.
5. 5) Kawahara N., Tokusan Shubyo, 16, 1-2 (2013).