CNNW Anderson Cooper 360 September 17, 2014
York outpatient medical center. Tonight we have there will be plenty to talk about in a moment. A source tells cnn investigators are learning this. An unauthorized procedure, a biopsy on rivers vocal chords was begun on the comedienne while she was sedated chl. Sources say there was no consent form signed by rivers. Knowing what is going to happen to you is crucial. The morning began where she was having a scheduled procedure by the clinics doctor, dr. Lawrence cohen, inserting a tiny camera down her throat looking for possible digestive issues, when staffers say cohen saw something. While riv...