Failing to find an actual paper that does more than mention in passing that they-re not shown effective—it just gets treated as common knowledge. Wikipedia’s condom article references “Boston Women’s Health Book Collective (2005). Our Bodies, Ourselves: A New Edition for a New Era. New York, NY: Touchstone. p. 333. ISBN 0-7432-5611-5.”
Not that I don’t believe you, but would you happen to have a source I could use for further reference?
Failing to find an actual paper that does more than mention in passing that they-re not shown effective—it just gets treated as common knowledge. Wikipedia’s condom article references “Boston Women’s Health Book Collective (2005). Our Bodies, Ourselves: A New Edition for a New Era. New York, NY: Touchstone. p. 333. ISBN 0-7432-5611-5.”
Here’s a nifty visualization of the scales involved: Cell Size and Scale