<...This does not sound like a random "controlled" study. ...>

A "controlled" study means that there is a control or comparison group.

Lisa Amir
MBBS, MMed, IBCLC in Melbourne, Australia
PS the digital camera I'm using is a Kodak DC4800 Zoom Digital Camera - I
find it's pretty good, but I have trouble focussing at 6X enlargement if the
light is not good. I'm taking photos at the bedside or wherever - and can't
set up lights. I am no expert with cameras, so this is not an endorsement or
criticism of this camera.

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