22 Research Methodology TechSci Research used its own forecast tool, which is based on the growth of various allied industries in respective regions . TechSci Research also used the impact analysis during short, medium and long term period to estimate the demand and to reach accurate market numbers . It should be noted that the figures compiled are only for the organized market including market share data . The currency used in the report is the United States Dollar (USD), with the market size indicated in USD million . Partial List of Companies Interviewed Key Secondary Sources ▪ Medtronic Plc. ( Covidien ) ▪ GE Healthcare Inc. ▪ Koninklijke Philips N.V. ▪ Masimo Corporation ▪ Becton , Dickinson, and Company ( CareFusion Corp.) ▪ CAS Medical Systems , Inc. ▪ Nihon Kohden Corporation ▪ Opto Circuits India Ltd. ▪ Nonin Medical , Inc. ▪ Welch Allyn, Inc. (Hill - Rom Holdings, Inc.) ▪ OSI Systems , Inc. ( Spacelabs Healthcare) ▪ Omron Corporation ▪ Drägerwerk AG & Co. KGaA ▪ Meditech Equipment Co ▪ World Bank ▪ TechSci Research Proprietary Database & Knowledge Repository ▪ Company Annual Reports ▪ Industry Magazines ▪ Industry Reports ▪ News Dailies ▪ Credible Paid Databases