Analysis of information sources in references of the Wikipedia article "Smegma" in English language version.
The production of smegma increases from the age of 12-13, but our actual figures of the incidence of smegma can only be of limited significance, as the boys received regular instruction about preputial hygiene.
The production of smegma increases from the age of 12-13, but our actual figures of the incidence of smegma can only be of limited significance, as the boys received regular instruction about preputial hygiene.
The production of smegma increases from the age of 12-13, but our actual figures of the incidence of smegma can only be of limited significance, as the boys received regular instruction about preputial hygiene.