TY  - JOUR
AU  - Freedman, K. B.
AU  - Back, S.
AU  - Bernstein, J.
DO  - doi:10.1302/0301-620X.83B3.0830397
UR  - https://doi.org/10.1302/0301-620X.83B3.0830397
TI  - Sample size and statistical power of randomised, controlled trials in orthopaedics
T2  - The Journal of Bone & Joint Surgery British Volume
VL  - 83-B
IS  - 3
PY  - 2001
SP  - 397
EP  - 402
ER  -