@article{Ramirez:165569,
      author        = "Ramirez, J. M. and Aguilella, V. and Elia, M. and Gracia,
                       J. A. and Martinez, M.",
      title         = "{Doppler-Guided Hemorrhoidal Artery Ligation in the
                       Management of Symptomatic Hemorrhoids}",
      year          = "2005",
}