Narayan, Raj K.; Michel, Mary Ellen; Ansell, Beth; Baethmann, Alex; Biegon, Anat; Bracken, Michael B.; Bullock, M. Ross; Choi, Sung C.; Clifton, Guy L.; Contant, Charles F.; Coplin, William M.; Dietrich, W. Dalton; Ghajar, Jamshid; Grady, Sean M.; Grossman, Robert G. (May 2002). "Clinical Trials in Head Injury". Journal of Neurotrauma. 19 (5): 503–557. doi:10.1089/089771502753754037. ISSN0897-7151. PMC1462953. PMID12042091.
Narayan, Raj K.; Michel, Mary Ellen; Ansell, Beth; Baethmann, Alex; Biegon, Anat; Bracken, Michael B.; Bullock, M. Ross; Choi, Sung C.; Clifton, Guy L.; Contant, Charles F.; Coplin, William M.; Dietrich, W. Dalton; Ghajar, Jamshid; Grady, Sean M.; Grossman, Robert G. (May 2002). "Clinical Trials in Head Injury". Journal of Neurotrauma. 19 (5): 503–557. doi:10.1089/089771502753754037. ISSN0897-7151. PMC1462953. PMID12042091.
Narayan, Raj K.; Michel, Mary Ellen; Ansell, Beth; Baethmann, Alex; Biegon, Anat; Bracken, Michael B.; Bullock, M. Ross; Choi, Sung C.; Clifton, Guy L.; Contant, Charles F.; Coplin, William M.; Dietrich, W. Dalton; Ghajar, Jamshid; Grady, Sean M.; Grossman, Robert G. (May 2002). "Clinical Trials in Head Injury". Journal of Neurotrauma. 19 (5): 503–557. doi:10.1089/089771502753754037. ISSN0897-7151. PMC1462953. PMID12042091.
Narayan, Raj K.; Michel, Mary Ellen; Ansell, Beth; Baethmann, Alex; Biegon, Anat; Bracken, Michael B.; Bullock, M. Ross; Choi, Sung C.; Clifton, Guy L.; Contant, Charles F.; Coplin, William M.; Dietrich, W. Dalton; Ghajar, Jamshid; Grady, Sean M.; Grossman, Robert G. (May 2002). "Clinical Trials in Head Injury". Journal of Neurotrauma. 19 (5): 503–557. doi:10.1089/089771502753754037. ISSN0897-7151. PMC1462953. PMID12042091.