Validation of the new DSM‐5‐TR criteria for prolonged grief disorder and the <scp>PG‐13‐Revised</scp> ( <scp>PG‐13‐R</scp> ) scale
Holly G. Prigerson, Paul A. Boelen, Jiehui Xu, Kirsten V. Smith, Paul K. Maciejewski
World Psychiatry · 2021
10.1002/wps.20823