Athol A. W. Johnson
"In cases of masturbation we must, I believe, break the habit by inducing such a condition of the parts as will cause too much local suffering to allow of the practice to be continued. For this purpose, if the prepuce is long, we may circumcise the male patient with present and probably with future advantages; the operation, too, should not be performed under chloroform, so that the pain experienced may be associated with the habit we wish to eradicate." On An Injurious Habit Occasionally Met with in Infancy and Early Childhood, Athol A. W. Johnson. The Lancet, vol. 1 (7 April 1860): pp. 344-345.