translation.en: When we started doing our research at BCG, we decided not to look so much at the costs, but to look at the quality instead, and in the research, one of the things that fascinated us was the variation we saw.
translation.zh: 我们开始在BCG做研究的时候， 我们决定先不看费用是多少， 而是看质量。 在研究中， 悬殊的治疗质量相当引人注目。