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2. Bilateral rupture of quadriceps femoris tendons with six-year interval between injuries;M, Graney C.,1943
3. American Journal of Surgery 61, 142-64.
4. Bilateral rupture of the quadriceps tendon;F., Hinkamp J.; J, Pellicore R.;American Medical Association Archives of Surgery,1957
5. Bilateral rupture of quadriceps tendon;L, James K.;British Medical Journal; Bilateral spontaneous and simultaneous rupture of the quadriceps tendon in gout,1938