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This User’s Guide is a resource for investigators and stakeholders who develop and review observational comparative effectiveness research protocols. It expla

"Catherine Caufield has written an important book on an important topic: the history behind the safety standards limiting the effects of high energy radiation o

This newly revised edition of Bryan Peterson's most popular book demystifies the complex concepts of exposure in photography, allowing readers to capture the im

Revised, updated, and expanded for its Third Edition, Anatomic Exposures in Vascular Surgery, is an indispensable guide for the vascular surgeon planning an ope