title: Delayed polyvalent antivenom serum therapy in viper bites.
mesh_terms: D000293:Adolescent; D000328:Adult; D000997:Antivenins / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D007116:Immunization, Passive; D008297:Male; D008875:Middle Aged; D012909:Snake Bites / Q000628:therapy*; D014757:Viper Venoms / Q000276:immunology*
chemical_list: D000997:Antivenins; D014757:Viper Venoms