Evaluation of shark cartilage in patients with advanced cancer: A north central cancer treatment group trial

Charles L. Loprinzi, Ralph Levitt, Debra L. Barton, Jeff A. Sloan, Pam J. Atherton, Denise J. Smith, Shaker R. Dakhil, Dennis F. Moore, James E. Krook, Kendrith M. Rowland, Miroslaw A. Mazurczak, Alan R. Berg, George P. Kim