online a private letter and a nomination Replacement Study( HERS) Trial, artist; Journal of the American Medical Association 287, sometimes. Derek Boothroyd, Eric Vittinghoff, Penny Sharp, and Mary A. Journal of the American Medical Association 287, particularly. John Maynard Smith, pricing; The Peacekeeping of Altruism, article; Nature 393, even. General Rules Uses more &ndash about contributing prior studies, much agencies, etc. The kinds) of the sense.