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. 2011 Feb 21;2011:0813.
Ref (type) Population Outcome, Interventions Results and statistical analysis Effect size Favours
Adverse effects

Systematic review
21 women with primary dysmenorrhoea
Data from 1 RCT
Adverse effects
0/10 (0%) with low-frequency TENS
0/11 (0%) with placebo TENS or tablet