3013
Patients with more than 2 . 7 mm of absolute cervical translation and at least 50 % reduction of cervical and referred pain with a two day rigid cervical immobilization test were admitted into the study .
 cervical, cervical, cervical
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 cervical, cervical, cervical