Systematic Review
Copyright ©The Author(s) 2019.
World J Gastroenterol. Oct 21, 2019; 25(39): 6016-6024
Published online Oct 21, 2019. doi: 10.3748/wjg.v25.i39.6016
Table 1 Characteristics of the included studies
AuthorsCountryYear of publicationNumber of patientsNOSaLiver cirrhosis
Alvarez et al[10]Buenos Aires, Argentina201530IN
Chan et al[5]Hong Kong, China201625IY
Linecker et al[11]Zurich, Switzerland201745IN
Petrowsky et al[4]Zurich, Switzerland201524IN