1. 
   Sterile Water Injection
   Intradermal injections of sterile water that are inected just under the skin, on four locations in the lower back, that may be used to decrease back pain during labor. Sterile-water injection causes a burning sensation that is believed to relieve labor pain by counterirritation.
   Found op http://www.pregnology.com/AZ/S/6
   
   

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