Denmark
Dissertations can be located through databases at the three universities:
Aarhus
Copenhagen
Odense
Abstracts of dissertations can also be located in the database of the journal of the national medical association (enter search criteria, and choose "Akademiske afhandlinger" in the drop-down menu)
Ugeskrift for Læger
Finland
The national society of obstetrics and gynaecology, SGY, has a searchable database on it wesite.
SGY
Several Finnish universities also maintain databases of dissertations
Helsinki
Oulu
Tampere
Norway
Dissertations can be located through databases at these universities:
Bergen
Oslo
Trondheim
The Norwegian Institute for Studies in Research and Higher Education maintains a national registry of doctoral dissertations.
NIFU
Abstracts of dissertations can also be located in the database of the journal of the national medical association
Tidsskrift for Den norske Lægeforening
Sweden
Dissertations can be located through databases at these universities:
Karolinska

Lund

Sahlgrenska

Uppsala