Research Report Project MF12.524.015-0004B, Report No. 2 Naval Medical Research Institute National Naval Medical Center Bethesda, Maryland, 20014, U.S.A. 4 October 1971 Second Printing, with revisions, Corrections, and Additions: 20 April 1972 (Supersedes AD No. 734391) http://www.dtic.mil/dtic/tr/fulltext/u2/750271.pdf http://www.worldcat.org/oclc/9937915