Mental disorders in primary care: prevalence and co-morbidity among disorders. Results from the Functional Illness in Primary care (FIP) studyTomas Toft, Frede Olesen, Kaj Sparle Christensen et al.|Psychological Medicine|2005Cited by 257
The Outcome of Health Anxiety in Primary Care. A Two-Year Follow-up Study on Health Care Costs and Self-Rated HealthPer Fink, Kaj Sparle Christensen, Eva Ørnbøl|PLoS ONE|2010Cited by 229
A brief case-finding questionnaire for common mental disorders: the CMDQKaj Sparle Christensen, Frede Olesen, Tomas Toft et al.|Family Practice|2005Cited by 181
The Patients’ Illness Perceptions and the Use of Primary Health CareLisbeth Frostholm, John Weinman, Kaj Sparle Christensen et al.|Psychosomatic Medicine|2005Cited by 152
A new questionnaire to identify bodily distress in primary care: The ‘BDS checklist’Anna Budtz-Lilly, Marianne Rosendal, Kaj Sparle Christensen et al.|Journal of Psychosomatic Research|2015Cited by 126