Clive Sharp, the man who murdered Irish vet Catherine Gowing, was jailed for life at Mold Crown Court and ordered to serve a minimum of 37 years behind bars before he can be considered for parole.
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Evelyn Beatriz Hernandez had been charged with homicide.
Lissie Harper had been married just four weeks before her husband died doing his job.
Scientists say the move would prevent 25% of the estimated 40 million new cases of vitamin D deficiency over the coming 90 years.