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A 29 gauge needle produces significantly less discomfort than a 25 gauge needle and is thin enough that most patients describe the sensation as a mild pinch rather than a sting

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(2000) Ghrelin strongly stimulates growth hormone release in humans

10.3980/j.issn.2222-3959.2010.03.06 108 ShimizuH.TakayamaK.YamadaK.SuzumuraA.SatoT.NishioY.et al (2022)