Prompt, whether vitamin D will be developed or produced in a skin at acceptance solar...

[Elena]

Prompt, whether vitamin D will be developed or produced in a skin at acceptance of solar baths through a windowpane? At us in Norilsk the sun in a window now all day and night, and in the street the child to undress coldly.

[Nata]

It is thought to me, that will not be, as glass ultrafillet does not pass or miss.

[Svetlana]

Gde-that read, that to the child enough solar beams which get on the open sites of a body: the face, arms or hand.