Source:
Science (New York, N.Y.) [Science] 1990 Oct 05; Vol. 250 (4977), pp. 53-61.Publisher: American Association for the Advancement of Science Country of Publication: United States NLM ID: 0404511 Publication Model: Print Cited Medium:
Source:
Ugeskrift for laeger [Ugeskr Laeger] 2000 Jan 03; Vol. 162 (1), pp. 58-9.Publisher: Den Alm Danske Laegerforening Country of Publication: Denmark NLM ID: 0141730 Publication Model: Print Cited Medium: Print ISSN: