Chai, Xiuli
Gan, Zhihua
Zhang, Miaohui
Funding for this research was provided by:
National Natural Science Foundation of China (61203094 and 61305042)
Science and Technology Foundation of Henan Province of China (152102210048)
Natural Science Foundation of Educational Committee of Henan Province of China (14A413015)
Research Foundation of Henan University (xxjc20140006)