TY  - RPRT
TI  - Vibrating umbilicus.
AU  - D Jackson
AU  - B Mayou
PY  - 1973
DO  - 10.1136/bmj.2.5869.780-c
UR  - https://pubmed.ncbi.nlm.nih.gov/4718338/
ID  - 4718338
ER  -