The Swiss government says at least 12,000 yodellers take part through about 780 groups of the Swiss Yodelling Association.
More than £4 million of potential bonuses were banned under new rules on performance-related executive pay, regulator Ofwat said.
Schizophrenia is a mental disorder that typically emerges in early adulthood, and is often associated with hallucinations and delusional beliefs.
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