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2. Christiansen, T.: Acta Med. Scand. 1935.85.332. Acta Med Scand. 1936. suppl. 78.895.
3. Meyler, P.: Acta Med. Scand. 1935/36.87.313.
4. Clausen, J.: Acta Med. Scand. 1936. suppl. 78.908. Ugeskr.f. Læger 1937.2.301. Hospitalstidende. 1935.41.1.
5. Alsted, G.: Acta Med. Scand. 1936. suppl. 78.900.