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Concord Medical Services Holdings Limited, together its subsidiaries, operates a network of radiotherapy and diagnostic imaging centers in the People's Republic of China. The company operates in two segments, Network and Hospital. Its services include linear accelerators and external beam radiotherapy, proton therapy system, gamma knife radiosurgery, head gamma knife system, and diagnostic imaging services. The company's other treatments and diagnostic services comprise positron emission tomography-computed tomography and magnetic resonance imaging scanners. In addition, it provides clinical support services, such as developing treatment protocols for doctors, and organizing joint diagnosis between doctors in its network and clinical research, as well as helps to recruit and determine the compensation of doctors and other medical personnel. Further, the company offers radiotherapy and diagnostic equipment leasing, management services, and premium cancer and proton treatment services to hospitals, as well as teleconsultation and medical information technology services; and sells medical equipment. Additionally, it operates specialty cancer hospitals, which offer radiotherapy services, diagnostic imaging services, chemotherapy, and surgery. The company was founded in 1997 and is headquartered in Beijing, the People's Republic of China.

Correvio Pharma Corp., a specialty pharmaceutical company, engages in developing therapeutics worldwide. Its portfolio of marketed brands comprise Aggrastat (tirofiban hydrochloride) for patients with acute coronary syndrome; and Brinavess (vernakalant IV) for the rapid conversion of recent onset atrial fibrillation to sinus rhythm. The company also offers ESMOCARD and ESMOCARD LYO, a short acting beta blocker for the treatment of supraventricular tachycardia and control of the ventricular rate in patients with atrial fibrillation; Trevyent, a development stage drug/device combination product for pulmonary arterial hypertension; Xydalba, a treatment for acute bacterial skin and skin structure infections; and Zevtera/Mabelio, a cephalosporin antibiotic for intravenous administration with rapid bactericidal activity. Correvio Pharma Corp. was incorporated in 2018 and is headquartered in Vancouver, Canada.

Liberty Health Sciences Inc. engages in the production and distribution of medical cannabis in the United States. The company offers medical cannabis in the State of Florida through the Florida Department of Health, office of medical marijuana use. As of January 21, 2021, it operated 29 dispensaries in Florida. The company is headquartered in Gainesville, Florida.

PowerShares Dynamic Industrials Sector Portfolio (the Fund) seeks investment results that correspond generally to the price and yield of the Dynamic Industrials Sector Intellidex Index (the Index). The Index consists of stocks of 60 United States industrial companies. These are companies that are principally engaged in the business of providing industrial products and services, including engineering, heavy machinery, construction, electrical equipment, aerospace and defense, and general manufacturing. The Fund will normally invest at least 90% of its total assets in common stocks that comprise the Index. The Fund's investment advisor is Invesco PowerShares Capital Management LLC.

ProShares Short Basic Materials (the Fund) seeks daily investment results that correspond to the inverse (opposite) of the daily performance of Dow Jones U.S. Basic Materials Index (the Index). The Index measures the performance of the basic materials industry of the United States equity market. The Fund invests in derivatives as a substitute for directly shorting stocks in order to gain inverse exposure to the Index. The Fund invests in financial instruments whose value is derived from the value of an underlying asset, interest rate or index. The Fund also invests in short-term cash instruments that have terms to maturity of less than 397 days and exhibit credit profiles. ProShare Advisors LLC is the investment advisor of the Fund.