Although solariums were becoming common in the early 1900s and phototherapy was gaining popularity as a result of the awarding of a Nobel Prize to Finsen in 1903, it wasn't until 1921 when Hess and Unger demonstrated that rickets could be cured by exposure to sunlight that the healthful benefit of sun exposure appreciated.

500 pages, biography

Media	Boeken Paperback Book (Boek met zachte kaft en gelijmde rug)
Vrijgegeven	9 november 2012
ISBN13	9781461353133
Uitgevers	Springer-Verlag New York Inc.
Pagina's	500
Afmetingen	155 × 235 × 26 mm · 725 g
Uitgever	Holick, Michael F.

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