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    Notorious 'Pharma Bro’ Martin Shkreli released from prison early

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  • How one teacher buses mental health to the community

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  • Doctors share postpartum depression warning signs to look out for

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  • Abbott baby formula lab could reopen ‘very soon,’ FDA Chief says

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  • Former nurse sentenced for medical error that killed patient

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Doctors perform breakthrough dolphin surgery

02:23

Sarah, a 29-year-old dolphin, spent years working with children before her health began to fail. Tests revealed one of her airways had closed off 80 percent, so doctors used advances in human medicine to help her. NBC’s Kerry Sanders reports.