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Fiber Metabolism in Chronic Obstructive Pulmonary Disease

This protocol is an extension of a recent study about whole-body SCFA production rates in COPD patients. The investigators hypothesize that a short-term fiber supplementation increases SCFA production in COPD patients.

Umbilical Cord Mesenchymal Stem Cells Transplantation in the Treatment of Chronic Obstructive Pulmonary Disease

To evaluate the safety and efficacy of human umbilical cord mesenchymal stem cells transplantation in patients with COPD