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Dr. Enrique Diago, Havana, Superintendent of Hospital No. 1, Havana, Cuba
Dr. Jose F. Benitez, Havana, Chief of the Laboratory, Hospital No. 1, Havana, Cuba




Dr. Enrique Diago, Havana, Superintendent of Hospital No. 1, Havana, Cuba
Dr. Jose F. Benitez, Havana, Chief of the Laboratory, Hospital No. 1, Havana, Cuba