Item	Ni, Yi Hu	Li, Xun	Xu, Yun	Liu, Jian Ping
Conceiving the review	X	X		X
Designing the review	X	X	X	X
Coordinating the review	X
Data collection for the review	X	X
Designing search strategies	X	X		X
Undertaking searches	X	X
Screening search results	X	X
Organising retrieval of papers	X	X
Screening retrieved papers against inclusion criteria	X	X
Appraising quality of papers	X	X
Extracting data from papers	X	X
Contacting authors of papers for additional information		X	X
Providing additional data about papers		X	X
Obtaining and screening data on unpublished studies		X	X
Data management for the review	X
Entering data into RevMan	X	X
Analysis of data	X	X
Interpretation of data	X	X	X	X
Providing a methodological perspective				X
Providing a clinical perspective	X		X	X
Providing a policy perspective			X	X
Providing a consumer perspective			X	X
Writing the review	X	X
Providing general advice on the review				X
Securing funding for the review	X			X
Performing previous work that was the foundation of the current study				X