21.   They are linking up with coca growers in Bolivia and Peru and violently seizing local drug markets in Los Angeles and across the southwestern United States.

22.   Three years ago, coca growers fought pitched battles with police just south of here in an attempt to disrupt such efforts.

23.   A leader of coca leaf growers, Jose Montevilla, said the roadblocks will continue until the government suspends plans to eradicate coca leaf plants in the area.

24.   And only coca growers can afford to buy gasoline, which authorities heavily tax because traffickers use it to turn coca into cocaine.

25.   Coca growers are also wondering what would happen to the coca markets the guerrillas usually set up in nearby villages.

26.   Coca growers have blocked highways with rocks to protest a decree banning the commercialization of coca, a traditional Andean plant used to make cocaine.

27.   Coca growers in San Jose del Guaviare have blocked runways to prevent herbicide-spraying planes from taking off.

28.   Coca growers are also on strike in Guaviare state, where protests turned violent last month.

29.   Colombian coca growers have moved some crops to Venezuelan soil, Venezuela says.

30.   He also suggested illnesses may be due to the unsanitary conditions that coca growers live in and their exposure to toxic precursor chemicals.