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PG-13 is a validated and robust diagnostic tool for Prolonged Grief Disorder. It is developed by Dr. Prigerson and Dr. Maciejewski and proven adherent to the criteria described in DSM-11 and ICD-11. It is free of charge to use PG-13 in clinical diagnosis and bereavement-related studies. Note that this diagnostic tool is protected by copyright and should not be reproduced without the permission of the authors.
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