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Table 4 Treatment type and country of origin of studies that reported treatment information

From: Meta-analysis of the impact of human papillomavirus (HPV) on cancer risk and overall survival in head and neck squamous cell carcinomas (HNSCC)

Author, Year Type of Treatment Country
Fakhry, et al. 2008 CTX followed by Chemo-XRT United States
Weinberger, et al. 2006 XRT ± surgery United States
Worden, et al. 2008 CTX followed by Chemo-XRT or XRT/surgery United States
Lindel, et al. 2001 XRT Switzerland
Dahlgren, et al. 2004 XRT Sweden
Smith, et al. 2008 XRT ± surgery United States
Hafkamp, et al. 2008 CTX ± XRT ± surgery Netherlands
Friesland, et al. 2001 XRT Sweden
  1. CTX: Chemotherapy; XRT: Radiotherapy; Chemo-XRT: concurrent chemo-radiation