TY  - RPRT
TI  - Avoiding misclassification bias with the traditional Charnley classification: rationale for a fourth Charnley class BB.
AU  - C Röder
AU  - L P Staub
AU  - P Eichler
AU  - M Widmer
AU  - D Dietrich
AU  - S Eggli
AU  - U Müller
PY  - 2006
DO  - 10.1002/jor.20224
UR  - https://pubmed.ncbi.nlm.nih.gov/16892448/
ID  - 16892448
ER  -