Ngwa ngwa 35% Gbanyụọ na koodu akwụkwọ ikike a
N'ịkwalite ọhụụ iji meziwanye ndụ site n'ịgbanwe ụzọ ndị mmadụ na-ehi ụra, Emma- Ụlọ ọrụ Sleep tọrọ ntọala site na ndị enyi abụọ Manuel Müller na Dennis Schmoltzi laa azụ na 2013. Mgbe ha kwusịrị akwa Emma na Germany, ha gbasaa ngwa ngwa na mba ndị ọzọ dị ka Austria. Switzerland, Netherlands, UK, France, Belgium, Italy na Spain ...
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