Monthly distribution of Gastrophilus species in horses in the United States--implications on treatment schedules.
D000818:Animals; D006734:Horse Diseases / Q000453:epidemiology*; D006736:Horses; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000662:veterinary*; D007816:Larva Migrans, Visceral / Q000453:epidemiology / Q000662:veterinary*; D009668:Nose Diseases / Q000453:epidemiology / Q000662:veterinary*; D012621:Seasons; D014481:United States