New IVF treatment could raise birth rate by 50%

Anna and Russell, a British couple, successfully had twins on their first IVF attempt. They used a new technique that may increase the chances of success by identifying the best embryos. This method is still experimental, but the couple believes in its effectiveness.

What is the significance of Anna and Russell being one of the first British couples to use this technique?

What does the couple believe about the experimental nature of the technique they used?