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. Author manuscript; available in PMC: 2015 Jun 2.
Published in final edited form as: J Occup Environ Med. 2014 Jan;56(1):79–85. doi: 10.1097/JOM.0000000000000029

FIGURE 1.

FIGURE 1

Participant attrition over time. This flowchart explains the recruitment and retention of participants over the course of the study. IT, information technology.