1. History of needles and syringes;Schwidetzky;Anesth Analg,1944
2. A critical study of the origins and early development of hypodermic medication;Howard-Jones;J Hist Med,1947
3. The origins of hypodermic medication;Howard-Jones;Scientific American,1971
4. Hypodermic medication;Haller;NYS J Med,1981
5. A question of priority: Alexander Wood, Charles Hunter and the hypodermic method;Brunton;Proc R Coll Physicians Edinb,2000