Correction to: Detect tissue heterogeneity in gene expression data with BioQC.

After the publication of this work [1], a mistake was noticed in the Eq. 1. Given an m  ×  n expression matrix with m genes and samples of n tissues, the correct definition of the Gini index for gene i is.

Detect tissue heterogeneity in gene expression data with BioQC.

Background: Gene expression data can be compromised by cells originating from other tissues than the target tissue of profiling. Failures in detecting such tissue heterogeneity have profound implications on data interpretation and reproducibility. A computational tool explicitly addressing the issue is warranted.