A. M.-H. Ho, P. W. Dion, C. S. H. Ng and M. K. Karmakar Understanding immortal time bias in observational cohort studies Anaesthesia 68
Article first published online: 13 DEC 2012 | DOI: 10.1111/anae.12120
Complete the form below and we will send an e-mail message containing a link to the selected article on your behalf
Required = Required Field
Choose captcha format: Image or Audio. Click here if you need help.