Studdert; et al. (2004). "Financial Conflicts of Interest in Physicians' Relationships with the Pharmaceutical Industry – Self-Regulation in the Shadow of Federal Prosecution". N Engl J Med. 351 (18): 1891–2000. doi:10.1056/NEJMlim042229. PMID15509824.
Studdert; et al. (2004). "Financial Conflicts of Interest in Physicians' Relationships with the Pharmaceutical Industry – Self-Regulation in the Shadow of Federal Prosecution". N Engl J Med. 351 (18): 1891–2000. doi:10.1056/NEJMlim042229. PMID15509824.