可以参考如下发表在PloSOne上面的文章中的描述 　　PopulationandMethods 　　EthicsStatement 　　Thestudywasapprovedbytheinsititutionalreviewboard(CWO)ofAltrechtPsychosomaticMedicine,Zeist,TheNetherlands.Allpatientsprovidedwritteninformedconsent. 　　Participants 　　ThisstudywasconductedatAltrechtPsychosomaticMedicine,Zeist,TheNetherlands,aspecializedtertiarytreatmentcenterinwhichonlythemostseverelyimpairedpatientsareexaminedandtreated.ThediagnosisaccordingtoDSMIVcriteriawasestablishedbya