Looking for a specific study

Anybody have a link to that study that reported variable rates of delivery by a medtronic pump, according to the height it was held at? I need to cite it, but I cant find it anywhere. Haven’t read it in years. Probably originally found it through one of you.

I think I found it. I think it was this: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2825629/