The Oregon Poison Control Center is seeing a big increase in the number of calls about children and electronic cigarettes, and it’s part of a national trend.  The American Association of Poison Control Centers says e-cigarette incidents more than doubled from 2013 to 2014, with more than half involving children under the age of six.  Oregon Poison Control Center medical director Zane Horowitz says the risk of ingesting a large amount of nicotine is significantly higher in liquid form than in cigarettes.  He adds the flavored nicotine liquids increase their appeal to young children.  The Oregon Poison Control Center fielded 84 calls about e-cigarettes last year, up from seven in 2011.