BERGQUIST , E., D. BERGQVIST, A. BRONGE, S. DAHLGREN, and T. HALLBÖÖK. 1973. “Diagnosis of Venous Thrombosis in the Lower Limbs: A Comparative Study Between 125I-Fibrinogen Test, Strain Gauge Plethysmography and Phlebography”. Upsala Journal of Medical Sciences 78 (3):191-99. https://doi.org/10.3109/03009737309178627.