Short-chain fatty acid production in accessible and inaccessible body pools as assessed by novel stable tracer pulse approach is reduced by aging independent of presence of COPD

Sarah K. Kirschner, Parisa Ghane, Jaekwan K. Park, S Simbo, Ivan Ivanov, Ulisses Braga-Neto, Gabriëlla A. M. Ten Have, John J. Thaden, M.P. Engelen, Nicolaas E.P. Deutz