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Carl Hayman: Former New Zealand prop diagnosed with early onset dementia aged 41 | Daily Mail Online
Hayman, who played the last of his 45 tests at the 2007 World Cup, revealed he had also has been diagnosed with probable chronic traumatic encephalopathy (CTE).
β https://www.dailymail.com/sport/rugbyunion/article-10160005/Rugby-Former-New-Zealand-prop-Carl-Hayman-diagnosed-early-onset-dementia-age-41.html