Coppola N, Loquercio G, Tonziello G, Azzaro R, Pisaturo M, Di Costanzo G, et al. HBV transmission from an occult carrier with five mutations in the major hydrophilic region of HBsAg to an immunosuppressed plasma recipient. Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology// J Clin Virol. 2013;58(1):315-7.