Depictions of the Aboriginals were also described by Gilchrist as more "detached" in tone. Some of the most widely covered missing person cases have been kidnappings of children by strangers; however these instances are rare. In most parts of the world, criminal abductions make up only a small percentage of missing person cases and, in turn, most of these abductions are by someone who knows the child (such as a non-custodial parent). A child staying too long with a non-custodial parent can be enough to qualify as an abduction. During the year 1999 in the United States, there were an estimated 800,000 reported missing children cases. Of these, 203,900 children were reported as the victims of family abductions and 58,200 of non-family abductions. However, only 115 were the result of "stereotypical" kidnaps (by someone unknown or of slight acquaintance to the child, taking them a long distance with intent to murder or to hold them permanently or for ransom). The "Wall Street Journal" reported in 2012 that: "It is estimated that some 8 million children go missing around the world each year." The BBC News reported that of the children who go missing worldwide, "while usually the child is found quickly the ordeal can sometimes last months, even years." The issue of child disappearances is increasingly recognized as a concern for national and international policy makers especially in cross border abduction cases, organized child trafficking and child pornography as well as the transient nature of unaccompanied minors seeking asylum. According to the UNHCR, over 15,000 unaccompanied and separated children claimed asylum in the European Union, Norway and Switzerland in 2009. The precarious situation of these children makes them particularly vulnerable to human rights abuses, rendering their protection critical, given the high risks to which they are exposed. Most of these children are boys aged 14 years and over, with diverse ethnic, cultural, religious and social backgrounds mainly originating from Afghanistan, Somalia, Angola, the Democratic Republic of Congo, Eritrea and Iraq. Among exploiters taking advantage of the children, are sometimes their own relatives who gain benefit in the form of social and/or family allowances. According to research done by Frontex, some types of threats faced by unaccompanied migrant minors include sexual exploitation in terms of pornography, prostitution and the internet; economic exploitation including forced donation of organs; criminal exploitation including drug smuggling and child trafficking including forced marriage and begging. Criminal networks are heavily involved with human trafficking to the EU and this includes also exploitation of minors as manpower in the sex trade and other criminal activities.