Wollert Wollert KC KC Kempf Kempf T T Wallentin Wallentin L L Growth differentiation factor 15 as a biomarker in cardiovascular disease Growth differentiation factor 15 as a biomarker in cardiovascular disease Clin Chem Clin Chem 2017 2017 63 63 140 140 151 151 28062617 28062617. This evidence concerns the gene GDF15 and keratoconus.