National Center for Biotechnology Information NCBI NLM MEDLINE humans pubmed abstract nih national institutes of health national library of medicine adult female male middle aged sensitivity and specificity hospitals prevalence mass screening / methods* cost savings norway psychiatric mass screening / economics erik søndenaa pmid:20465512 doi:10.3109/08039488.2010.486444 Øyvind nygård olav martin linaker critical pathways / economics intelligence tests / standards* learning disabilities / diagnosis* learning disabilities / etiology mass screening / standards mental competency / psychology* mental disorders* / complications mental disorders* / epidemiology mentally ill persons / psychology