参考文献

CARA THERAPEUTICS, INC.; O'CONNOR, Stephen, J.; NEWCOM, Jason, S.; RALBOVSKY, Janet, L.; GUSTAFSON, Gary, R.; BECKETT, R., Paul; LUO, Robert, Xhiyong Patent: WO2010/68520 A2, 2010 ; Location in patent: Page/Page column 28-29 ; WO 2010/068520 A2