Good day, I again request your help with the following article. thank you Crit Care Med. 1986 Sep;14(9):819-27. Acquired immunodeficiency syndrome in the United States: a selective review. Layon J, Warzynski M, Idris A. -- Kind regards, Oscar Martinez Zaragoza Departamento de Información Bibliográfica Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán Col. Sección XVI, Deleg. Tlalpan. C.P. 14000 México, D.F. Tel. 0155-54870900 Ext. 2306 [log in to unmask]