TY  - RPRT
TI  - Is O-K okay?
AU  - J T Barr
AU  - M Jeandervin
PY  - 1998
DO  - 10.1097/00006324-199811000-00001
UR  - https://pubmed.ncbi.nlm.nih.gov/9848829/
ID  - 9848829
ER  -