Like the lab-on-a-chip that allows people in remote parts of the world to test for HIV and syphilis, OraQuick can save lives by giving people hesitant to go to the clinic a test they can perform relatively easily and in the privacy of their own homes.

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Many who are at risk for HIV are hesitant to go to the clinic for a test because of the stigma of even appearing as though they might have HIV.

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"Receiving the drug itself is a major investment of a patient's time, so if you live 8 km from the nearest clinic and have to go there once a month and you don't have a ready means of transport it's a huge investment of your own time, " he told the BBC.

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"Undoubtedly advised by lawyers who were bad advisers, the general did not go to the clinic the other day, so I set a new date for the exams, " Guzman said.

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Depending on your insurance plan, you may pay a higher % to come see us than if you go to the hospital based clinic.

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Sue Avery, scientific director at the Bourn Hall Clinic in Cambridge, whose founders developed IVF, agreed only a few would choose to go through IVF who did not need to.

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