TY  - SER
AU  - 
AU  - 
AU  - 
AU  - 
AU  - 
TI  - Ultrasound imaging assessment of abdominal muscle function during drawing-in of the abdominal wall: : an intrarater reliability study
PY  - 2007///
CY  - Estados Unidos: 
PB  - Journal of orthopaedic & sport physical therapy, 
ER  -