Evidence Suggesting that Fasciola gigantica Might be the Most Prevalent Causal Agent of Fascioliasis in Northern Iran - K Ashrafi,; J Massoud,; K Holakouei,; M Mahmoodi,; MA Joafshani,; MA Valero,; MV Fuentes,; M Khoubbane,; P Artigas,; MD Bargues,; S Mas-Coma, (Iranian Journal of Public Health)