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"2011 Feb 1", "relationship": "HASCITATION"}, {"event_stamp": "2011-06-14T21:07:48", "citation_pubname": "Aging & mental health (Aging Ment Health)", "citation_pmid": "21547744", "citation_desc": "Age-group differences in facets of positive and negative affect.", "citation_url": "http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&id=21547744&retmode=ref&cmd=prlinks", "citation_type": "CT2", "citation_comment": "Via PubMed API", "id_user": "usr_4de5345b3b6a8", "id": "cit_4df7cda442d0f", "citation_source": "PubMed API", "citation_authors": "Ready RE, Vaidya JG, Watson D, Latzman RD, Koffel EA, Clark LA", "citation_pubdate": "2011 Jan 1", "relationship": "HASCITATION"}], "contrasts": [{"creation_time": 1512660659427, "event_stamp": "2011-06-22T22:48:53", "last_updated": 1512660659427, "name": "State Affect", "id_user": "usr_4de5345b3b6a8", "id": "cnt_4e027155c037c", "conditions": []}, {"creation_time": 1512660659394, "event_stamp": "2011-06-22T22:48:26", "last_updated": 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