The Spanish experience also shows increasing in the number of donor coordinators who work with bereaved families, and the number of specialists who retrieve organs can have a significant impact on donor rates.

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Heart transplantation is a proven treatment option for Class IV heart failure patients, but a limited number of donor hearts become available each year.

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Already today, the number of online donor designations in Calif. has jumped to 550, according to Bryan Stewart, vice president of communications at OneLegacy.

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Meanwhile, the number of people on the NHS Organ Donor Register in Scotland has reached a record high of more than two million.

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The problem is that an insufficient number of people are willing to make donor arrangements for the use of their organs when they die.

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Currently, the demand for transplant kidneys far outstrips the number which become available, and doctors match up donor organs with suitable patients so that very few are wasted.

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Junior health minister Lord Hunt of Kings Heath, in a written Parliamentary reply, said there was no centrally held information on the number of haemophiliacs who received clotting factor made from plasma donated by the donor.

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These included better identification of potential donors, improved referral of potential donors and improved care of donors to increase the number of organs available - around three organs were retrieved last year for every donor.

BBC: Health reporter, BBC News

And I mentioned, again, before that the United States bilaterally has also offered a number -- a lot of humanitarian support, including the fact that we are the largest donor of humanitarian assistance to the Syrian people.

WHITEHOUSE: Press Briefing by Deputy Press Secretary Josh Earnest