Soltani S, Arshadi M, Getso MI, Aminharati F, Mahmoudi M, Pourmand MR (2018) Prevalence of virulence genes and their association with biofilm formation in VRE faecium isolates from Ahvaz, Iran. J Infect Dev Ctries 12:970–977. doi: 10.3855/jidc.10078