The impact of standardizing the definition of visits on the consistency of multi-database observational health research
Crossref DOI link: https://doi.org/10.1186/s12874-015-0001-6
Published Online: 2015-03-08
Published Print: 2015-12
Update policy: https://doi.org/10.1007/springer_crossmark_policy
Voss, Erica A
Ma, Qianli
Ryan, Patrick B
License valid from 2015-03-08
Article History
Received: 8 August 2014
Accepted: 26 January 2015
First Online: 8 March 2015