TY  - RPRT
TI  - Abdominal symptom associations in a longitudinal study.
AU  - L Kay
AU  - T Jørgensen
PY  - 1993
DO  - 10.1093/ije/22.6.1093
UR  - https://pubmed.ncbi.nlm.nih.gov/8144291/
ID  - 8144291
ER  -