Erratum

After the “Competing interests” section in the original version of this article [1], an “Acknowledgements” section should be inserted and read as: “This study was partially funded by POSDRU grant no. 159/1.5/S/136893 - Parteneriat strategic pentru cresterea calitatii cercetarii stintifice din universitatile medicale prin acordarea de burse doctorale si postdoctorale - DocMed.Net_2.0".