RT Journal T1 Cheaper hiv drugs for poor nations bring a new challenge: Monitoring treatment JF JAMA JO JAMA YR 2002 FD July 10 VO 288 IS 2 SP 151 OP 153 DO 10.1001/jama.288.2.151 UL http://dx.doi.org/10.1001/jama.288.2.151 AB