[Retracted] Effects of Electroacupuncture with Different Waveforms on Chronic Prostatitis/Chronic Pelvic Pain Syndromes: A Randomized Controlled Trial

Table 3

Adverse events.

	4 Hz	20 Hz	4/20 Hz
Subcutaneous hematoma	3	2	2
Nausea or dizziness	1	0	0
Sharp pain	0	1	0
Abdominal organ injury	0	0	0
Serious adverse	0	0	0