Iraqi Death Toll: 60,000 or 600,000?

According to the UN,  the number of Iraqi's killed since the beginning ofthe war is approx. 55,000,  IraqBody Count .org puts the min. at 60,187 and the max at 66,050

The Lancet Medical Journal published a survey that was conducted by the John Hopkins School of PublicHealth that puts the death toll at over 600,000

According to the UK's Chief Scientific Adviser, the survey's methods were"close to best practice" and the studydesign was "robust". The BBCNews has the complete story here.

That's some difference.