VERTEX PHARMACEUTICALS INCORPORATED; KESHAVARZ-SHOKRI, Ali; ZHANG, Beili; ALCACIO, Tim, Edward; LEE, Elaine, Chungmin; ZHANG, Yuegang; KRAWIEC, Mariusz Patent: WO2011/119984 A1, 2011 ; Location in patent: Page/Page column 59-60 ; WO 2011/119984 A1