An example for an underpowered study: a comment on Ginkgo biloba for mild to moderate dementia in a community setting by McCarney et al.
Gaus
Wilhelm
W
D003704:Dementia / Q000188:drug therapy*; D020441:Ginkgo biloba; D006801:Humans; D008517:Phytotherapy; D028321:Plant Preparations; D016032:Randomized Controlled Trials as Topic / Q000592:standards
D028321:Plant Preparations