Martti Virtanen

Semantic Interoperability for Better health and Safer Healthcare [34 pages]

Alan L. Rector, Dipak Kalra, Jean Marie Rodrigues, 2009 .

Use of the dagger-asterisk system in the ICD-9 and ICD-10 and their national clinical modifications

Martti Virtanen, Björn Smedby, Olafr Steinum, 2004 .