can i purchase generic cytotec This work was supported by grants from 973 2011CB504203, SQ2015CB050449 Projects from Ministry of Science and Technology of China, the Natural Science Foundation of China 81472467, 81272894, 81230060, 81490750, 81490751, 81442009, 81272893, 81472466, 81302369, Science Foundation of Guangdong Province S2012030006287, Translational medicine public platform of Guangdong Province 4202037 and Guangdong Department of Science Program for New Century Excellent Talents in University NCET 12 0565; Guangdong Provincial National Science Fund for Distinguished Young Scholars 2014A03036003, Elite Young Scholars Program of Sun Yat sen Memorial Hospital Y201401