A lot of epidemiology consider to discover, expose in more than 2 fine long hair gauss (electromagnetic wave unit of measurement) the person in magnetic field, meet with cancered risk is higher.
The release and aerosolization of the fungal spore on the surface of building materials are the key factors to investigate the bioaerosol exposure and harmful effects on human health.
And the boundary of them has the same lithologic character: the ravinement surface of river course or exposure mudstone of flooding plain and root clay.
It was around 1855 that the first swimsuits appeared consisting of bloomers and black stockings while drawers were added to prevent the problem of exposer.