DUSTIN LUCA/Staff Photo. Stéfanie Seixas-Mikelus, a urologic oncologist at Andover Urology and surgeon at Holy Family Hospital in Methuen and Parkland Medical Center in Derry, NH demonstrates how she uses the da Vinci surgical system. Seixas-Mikelus is one of six women in her specialty nation-wide who uses robotics to perform surgeries. 3/7/12

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