8Zhou M, Wang H, Zhu J, et al. Cause-specific mortality for 240 causes in China during 1990-2013:a systematic subnational a- nalysis for the Global Burden of Disease Study 2013[J]. Lan- cet,2015,387(10 015) :251-272.
9Steger M,Schneemann M, Fox M. Systemic review : the patho- genesis and pharmacological treatment of hiccups[J]. Aliment Pharmaeol Ther,2015,42(9) :1 0:37-1 050.