TY  - RPRT
TI  - VALVULAR DEFECT IN PRIMARY VARICOSE VEINS: CAUSE OR EFFECT?
AU  - J LUDBROOK
PY  - 1963
DO  - 10.1016/s0140-6736(63)90844-4
UR  - https://pubmed.ncbi.nlm.nih.gov/14071921/
ID  - 14071921
ER  -