Alexion Pharmaceuticals (ALXN) is a world-renowned biotechnology company. The company was founded in 1992 and is headquartered in Connecticut, USA. The company launched Soliris (eculizumab injection) in 2007, which was the world's first drug for the treatment of paroxysmal nocturnal hemoglobinuria (PNH), helping the company achieve great success.

PubMed is a free information retrieval system provided by the U.S. National Library of Medicine (NLM), which mainly provides retrieval of biomedical papers.

Abbott Laboratories is a New York Stock Exchange-listed company founded in 1888 and headquartered in Abbott Park, Illinois. Abbott mainly produces drugs, medical devices, nutritional products (Abbott milk powder), etc. In the 2013 Fortune Global 500 ranking, Abbott Laboratories ranked 261st.

"Journal of Clinical Oncology" (CA: ACancerJournalforClinicians, CA Cancer J Clin) is a professional academic journal sponsored by the American Cancer Society and is the medical journal with the highest impact factor in the world. In the 2013 magazine impact factor rankings released by SCI Magazine, CA Cancer J Clin ranked first among medical magazines with an impact factor of 153.459, far higher than the second-ranked New England Journal of Medicine (New England Journal of Medicine). Med, impact factor: 50.017).

Medscape is a website owned by WebMD, the largest medical and health services website in the United States. The website mainly provides relevant information such as various medical journal articles, pictures, case reports, pharmaceutical news, free papers, CME and drug searches.