1.

纳入文献的基本特征

General characteristics of included trials

First author	Country	Study type	Blinded design	Consecutive or random	Reference standard	Cases	Quality score
Quality score: score by using criteria from the quality assessment of diagnostic accuracy studies (QUADAS).
Schneider[10]	Germany	Prospective	Unknown	Consecutive	Histology	298	28
Stieber[11]	Germany	Retrospective	Unknown	Unknown	Histology	314	27
Molina[12]	Spain	Prospective	Unknown	Consecutive	Histology	802	27
Nissan[13]	Israel	Prospective	Unknown	Consecutive	Histology	162	28
Shibayama[14]	Japan	Unknown	Unknown	Consecutive	Histology	359	26
Lamy[15]	France	Retrospective	Yes	Unknown	Histology	245	29
Takada[16]	Japan	Retrospective	Yes	Consecutive	Histology	326	30
Yamaguchi[17]	Japan	Unknown	Yes	Consecutive	Unknown	602	29
Sun[18]	China	Unknown	Unknown	Unknown	Histology	100	27
Yang[19]	China	Unknown	Unknown	Unknown	Histology	144	26