Author's response to reviews Title:Admission Hypoxia-inducible Factor 1alpha Levels and In-hospital Mortality in Patients with Acute Decompensated Heart Failure Authors:

In truth, the authors have built the four scatter diagrams with regression line, but they have omitted to report the required regression equation for each of the drawn plots, i.e. within every plot the respective values of the intercept and beta-coefficient (slope) are lacking, in contrast with the good rule which provides for inclusion of the constant in equation, according to the scheme: Y( dependent variable)=a+bX. Furthermore, cTnT should be expressed as ng/1000 ml rather than ng/ml. Please redo the four scatter plots accordingly, by entering the values of intercept and slope in each of them.