The most common regimens were 3TC + d4T + nevirapine ( NVP ) ( 54.8 % ) , zidovudine ( AZT ) + 3TC + NVP ( 14.5 % ) , 3TC + d4T + efavirenz ( EFV ) ( 20.1 % ) , and AZT + 3TC + EFV ( 5.4 % ) .
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