TY  - RPRT
TI  - How common is common?
AU  - H J Bennett
AU  - J B Ratner
PY  - 1991
DO  - 10.1097/00007611-199107000-00020
UR  - https://pubmed.ncbi.nlm.nih.gov/2068636/
ID  - 2068636
ER  -