Scott WilliamsNuclear MedicinePulmonary ReferencePULMREFScott WilliamsMay 30, 2007 Anonymous. Value of the ventilation/perfusion scan in acute pulmonary embolism. Results of the prospective investigation of pulmonary embolism diagnosis (PIOPED). The PIOPED Investigators. JAMA 1990; 263:2753-9.Latest in Pulmonary ReferencePULMREFMay 30, 2007PULMREFMay 30, 2007PULMREFMay 30, 2007PULMREFMay 30, 2007