References
- Gonzales CA, Srinivasan M,Whitcher JP, Smolin G. Incidence of corneal ulceration in Madurai District of South India. Ophthalm Epidemiol 1996;3:159–65.
- Mardia KY. Statistics of Directional Data. London & New York: Academic Press, 1972.
- Newcombe RG. Cold weather and testicular torsion. Brit Med J 1983;287:359.