Percent of participants with results Median concentration pg g Organochlorine 1999 2000 cycle 2001 2002 cycle 1999 2000 cycle 2001 2002 cycle PCB 66a NA 89 NC PCB 74a 47 33 41 50 PCB 99a 59 38 NC 40 PCB 105a 86 79 NC NC PCB 118a, b 44 27 48 59 PCB 126b 36 12 0 buy cialis online overnight shipping J Nutr 2004; 134 1 68 71