Radiation Therapy Physics Quality Assurance and Management Practices in Low- and Middle-Income Countries: An Initial Pilot Survey in Six Countries and Validation Through a Site Visit. - Yorke AA; Williams VM; Elmore S; Alleyne-Mike K; Addison E; Kyeremeh PO Jr; Tagoe SNA; Trauernicht CJ; Lazarus GL; Ford EC (Advances in radiation oncology, 2023)