A 2009-2010 survey of European fertility clinics shows 35-40% of assisted reproduction procedures on couples that have crossed borders to do so take place in Spain. This is equal to 10-15,000 procedures of the 30-35,000 undertaken in Europe every year.
Most of the couples come from Italy, France and the UK in descending order, followed by the rest of Europe and other continents.
''They come for the quality of care, and because our legislation is both rigorous and advanced,'' Association for Biological and Reproductive Studies President Manuel Ardoy told reporters.
Spain allows use of donor gametes, which Italy forbids, and it also allows women to be implanted with an unlimited number of fertilized eggs, which Germany limits to three.
One fourth of women who came from abroad chose Spain based on ''quality of care,'' according to an ESHRE survey. (ANSAMed).