@incollection{, CFB0C8FC4A538A71160DC1449F34B185 , author={{Kristin LiveltenHeggen} and {Oslo University Hospital, UllevAl}}, journal={{Global Journal of Medical Research}}, journal={{GJMR}}2249-46180975-588810.34257/GJMR, address={Cambridge, United States}, publisher={Global Journals Organisation}141712 }