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. 2003 Jan 20;2003(1):CD003110. doi: 10.1002/14651858.CD003110

Column totals.

Methods This does not refer to a separate study.
The 'column totals' identifier is used for the pooled analysis of road user deaths and pedestrian‐motor vehicle collisions, due to the presence of zero events in ≥1 of the study periods.
Participants  
Interventions  
Outcomes  
Notes