Modern birth: The fertility doctor who impregnated his patients

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Matthew White and Heather Woock discovered they were the children of their mothers' fertility doctor. The doctor had actually used his own semen to inseminate some 50 women without their knowledge. Through their campaigning it has become illegal for doctors to do this and the half-siblings have developed a family-like relationship. Presenter: Emily Webb Producer: Saskia Edwards Picture: Male nurse holding helium balloon celebrating newborn baby (stock photo) Credit: Getty Images