This definition appears very rarely
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Samples in periodicals archive:
Welcome to the website of the Irish Childhood Bereavement.
More Americans are grappling with the childhood loss of parents and siblings than may be commonly thought – and its impact is immense and spans well into adulthood, according to the results of a groundbreaking national childhood bereavement.
Cerel, Julie; Fristad, Mary A. ; Verducci, Joseph; Weller, Ronald A. ; Weller, Elizabeth B. (2006). "Childhood Bereavement: Psychopathology in the 2 Years Postparental Death". Journal of the American Academy of Child & Adolescent Psychiatry 45 (6): 681–90. doi:10. 1097/01. chi. 0000215327.
Winston’s Wish is the leading childhood bereavement.