Analysis of information sources in references of the Wikipedia article "Cloth face mask" in English language version.
[...] WHO director-general Dr Tedros Adhanom Ghebreyesus said on Friday that 'in light of evolving evidence, the WHO advises that governments should encourage the general public to wear masks where there is widespread transmission and physical distancing is difficult, such as on public transport, in shops or in other confined or crowded environments'.
Before Sam Peckinpah ever wore a bandana , before Paul Newman and Robert Redford ever got into western gear, these gentlemen train robbers [...]
The idea of using respirators was pioneered by Pliny the Elder in the first century A.D. when he recommended the use of animal bladder to protect Roman miners from inhaling lead oxide dust. Early inventions did not stop with Pliny as in the 16th century, Leonardo da Vinci, advised the use of a wet woven cloth to protect against toxic agents of chemical warfare.
Table 2: Examples of where the general public should be encouraged to use medical and non-medical masks in areas with known or suspected community transmission