I'd like a phonecard, please http://wbvhealthcare.com.au/acyclovir-400-mg-dosage-for-cold-sores-plya acyclovir stada 800mg gi bao nhiu Dr. William Schlaff, ob-gyn chief at Thomas Jefferson University in Philadelphia, said the rise in use of donor eggs "is probably partly a social story. Women not having success in becoming pregnant in their late 30s and 40s are more comfortable using donor eggs" and techniques have improved to raise success rates, Schlaff said. He was not involved in the research.