Adding the clinical framing, because it changes how the question reads. Most of what circulates confidently in this community traces back to one summary of one study, and the qualifier was dropped somewhere in the third retelling.

anders_CPH said:

Keep the original post as written when you update it, and add the correction underneath.

This answered a question I did not know how to ask. Printing the relevant bit and taking it with me.

From the other side of the consultation, briefly. The useful move here is to separate what is established from what is widely repeated. Those two sets overlap less than the confident tone of most write-ups suggests, and the second set is where nearly all the disagreement on this board comes from.

LindaRN_retired said:

The useful move here is to separate what is established from what is widely repeated.

Same pattern here, and in the same order.

Moderator note: two posts asking for a source have been merged into one. Please search the thread before asking again.