Source:
New scientist (1971) [New Sci] 1998 Jun 06; Vol. 158 (2137), pp. 61.Publisher: New Science Publications Country of Publication: England NLM ID: 9815377 Publication Model: Print Cited Medium: Print ISSN: 0262-4079
Source:
BMJ (Clinical research ed.) [BMJ] 1997 Nov 01; Vol. 315 (7116), pp. 1116.Publisher: British Medical Association Country of Publication: England NLM ID: 8900488 Publication Model: Print Cited Medium: Print ISSN:
Source:
Academic medicine : journal of the Association of American Medical Colleges [Acad Med] 1997 Mar; Vol. 72 (3), pp. 166.Publisher: Published for the Association of American Medical Colleges by Lippincott Williams & Wilkins Country of Publication: United States NLM ID: 8904605
Source:
The New York times on the Web [N Y Times Web] 1995 May 16, pp. C1, C3.Publisher: New York Times Country of Publication: United States NLM ID: 9877126 Publication Model: Print Cited Medium: Print ISSN: 0362-4331