TY  - SER
AU  - 
AU  - 
AU  - 
AU  - 
AU  - 
AU  - 
TI  - Efficacy of a C1-C2 self-sustained natural apophyseal glide (snag) in the management of cervicogenic headache
PY  - 2007///
CY  - Estados Unidos : 
PB  - Journal of orthopaedic & sport physical therapy
ER  -