Food supplements for body weight reduction: a systematic review of systematic reviews. by Onakpoya, I, Wider, B, Pittler, M, Ernst, E

Pyruvate supplementation for weight loss: a systematic review and meta-analysis of randomized clinical trials. by Onakpoya, I, Hunt, K, Wider, B, Ernst, E

The Use of Garcinia Extract (Hydroxycitric Acid) as a Weight loss Supplement: A Systematic Review and Meta-Analysis of Randomised Clinical Trials. by Onakpoya, I, Hung, S, Perry, R, Wider, B, Ernst, E