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The National Sperm Bank has urged donors to come forward to help create families.

"We鈥檙e literally asking men to come forward and just text "DONOR" to 88802 and enquire about becoming a sperm donor and help people to become a father," said the National Sperm Bank's Laura Witjens.

Each donor could help create up to ten families, she added, but it takes around 100 men to enquire about donation to produce one donor.

Donors are required to visit the clinic twice a week for three to four months.