Affiliation: | 1. Institut für Humangenetik der Universit?t, Albertstr. 11, D-7800, Freiburg, Federal Republic of Germany 2. Department of Medical Genetics, The Kennedy Institute, 7 Glostrup Landevej, Glostrup, Denmark 3. Instituut voor Anthropogenetica, Wassenaarseweg 72, Leiden, The Netherlands 4. The Raeden Centre, Midstocket Road, Aberdeen, Scotland
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