An ectopic pregnancy can be life threatening to a woman when the embryo implants onto locations outside the uterine cavity. That's because the tissue in these areas can't stretch like the uterus and if the embryo implants into the vascular supply, blood vessels can start bleeding, Kickham said.
Publication was timed to coincide with the tenth anniversary of the Columbine High School massacre, which occurred on April 20. The book spent eight weeks on The New York Times bestseller list in the spring of 2009, peaking at #3.
Two more students were found dead outside the school. The Columbine rampage was on record as the deadliest school shooting in United States history until a student killed 32 people, and himself, at Virginia Tech on April 16, 2007.