THE TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK; LANDRY, Donald, W.; KIM, Tae-Wan; DENG, Shi-Xian; GONG, Gangli; HWANG, Jeremy, C.; XIE, Yuli; LIU, Yidong; RINDERSPACHER, Alison Patent: WO2010/51064 A1, 2010 ; Location in patent: Page/Page column 5; 34 ; WO 2010/051064 A1