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An Ultra-Brief Screening Scale for Anxiety and Depression: The PHQ–4

1.7K

Citations

30

References

2009

Year

References

YearCitations

2001

42K

2006

29.5K

1992

29.1K

1988

21.5K

1994

12.5K

2002

9.9K

2003

6.1K

2002

5.8K

2007

4.6K

2004

3.5K

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