http://www.swisstissue.org/l4/tissue-donation/tissue-donation-types-tissues-transplantation-health-donor-recipient-allocation-coordination-wait-list-donation.php 2009-03-31 yearly 1.0 http://www.swisstissue.org/l4/tissue-donation/tissue-donation-types-tissues-transplantation-health-donor-recipient-allocation-coordination-wait-list-types.php 2009-03-31 yearly 0.9