Please answer the following question: Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Brain Behavior and Immunity -  Brain Behavior and Immunity is a peer-reviewed scientific journal published by Elsevier. It was establiushed in 1987 and covers research on the relationship between the nervous system psychology and the immune system. It is the official journal of the Psychoneuroimmunology Research Society. According to the Journal Citation Reports the journal has a 2012 impact factor of 5.612.
A:
Written Work