?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Groet&rft.aufirst=J%C3%BCrgen&rft.au=Groet%2C+J%C3%BCrgen&rft.date=1999&rft.title=Physical+mapping+and+identification+of+novel+genes+in+human+chromosome+21q11&rft.tpages=316&rft.inst=UCL+(University+College+London)&rft.degree=Doctoral