Efficacy of Paravertebral Injection of Interferon-α2b combined with High-Voltage Long-Term Pulsed Radiofrequency in DRG in mitigation of Postherpetic Neuralgia: A Retrospective Study med. app.

Exposure

• • also other exposures without EMF
• • signals/pulses
  • electric current application
  • therapeutic/medical device
  • electrotherapy
• • co-exposure