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http://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC4648343&blobtype=pdf

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4. "Hospital Acquired Infections (HAI) Market 2018 Expected to Surpass $36.16 Billion by 2023 - Market Research Future," MarketWatch. https://www.marketwatch.com/press-release/hospital-acquired-infections-hai-market-2018-expected-to-surpass-3616-billion-by-2023---market-research-future-2018-08-09

5. Saito, Yuhei, et al. “Microbial Contamination of Surgical Instruments Used for Laparotomy.” American Journal of Infection Control, vol. 42, no. 1, 2014, pp. 43–47., doi:10.1016/j.ajic.2013.06.022.

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