TY  - SER
AU  - 
AU  - 
AU  - 
AU  - 
AU  - 
TI  - Isometric strength of the cervical flexor, extensor, and rotator muscles in 220 healthy females aged 20 to 59 years
PY  - 2006///
CY  - Estados Unidos : 
PB  - Journal of orthopaedic & sport physical therapy, 
ER  -