參考資料：
1. 日本 – Hirayama et al., J Hum Nutr Diet. 2014
2. Published in Chinese Tang Yong et al., 2011. Chongquing Medical Journal, 30
3. Hirayama et al, J Human Nutrition Dietetics 2013
4. Hirayama et al., J Human Nutrition Dietetics. 2013
5.中國 – 唐勇等，重慶醫學，2011