TY  - RPRT
TI  - Reply from williams and maitland
AU  - TN Williams
AU  - K Maitland
PY  - 1999
DO  - 10.1016/s0169-4758(99)01424-6
UR  - https://pubmed.ncbi.nlm.nih.gov/10323752/
ID  - 10323752
ER  -