参考文献:
VERTEX PHARMACEUTICALS INCORPORATED ARONOV, Alex COME, Jon COTTRELL, Kevin GREY, Ronald LE TIRAN, Amaud MARONE, Valerie MARTINEZ-BOTELLA, Gabriel MESSERSMITH, David HUCK, Emilie, Porter Patent: WO/354 A, Location in patent: Page/Page column 53-55 WO /354 A