“…Antibodies against hepatitis E virus (Genelabs Diagnostics, Singapore Science Park, Singapore) and anti-human T-cell lymphotropic virus type I/II antibodies (Murex Diagnostics, Dartford, UK, and Abbott Laboratories, Abbott Park, IL, USA and HTLV Blot 2.4, Genelab Diagnostics, Singapore) were determined as reported previously (Dalekos et al, 1995(Dalekos et al, , 1998bStefanidis et al, 2004;Zervou et al, 2003Zervou et al, , 2004.…”