Comment on Xie et al.: The effects of CES1A2 A(−816)C and CYP2C19 loss-of-function polymorphisms on clopidogrel response variability among Chinese patients with coronary heart disease. Issue 3 (March 2015) - Bjerre, Ditte; Ferrero, Laura; Madsen, Majbritt; Hansen, Peter R.; Rasmussen, Henrik B.