1. Ahmadi NA, Pakdad K (2007) Tween as a substitute for diethyl ether in the formalin–ether sedimentation technique. Iranian J Publ Health 36:91–95
2. Ahmadi NA, Gachkar L, Pakdad K, Ahmadi O (2007) Potency of wet mount, formalin–acetone and formalin–ether methods in detection of intestinal parasitic infections. Iranian J Infect Dis Trop Med 12:43–47, (in Persian)
3. Beaver PC, Jung RC, Cupp EW (1984) Examination of specimens for parasites. In: Beaver PC, Jung RC, Cupp EW (eds) Clinical parasitology. 9th edn. Lea & Febiger, Philadelphia, pp 733–758
4. Boswell MV, Collins VJ (1996) Diethyl ether and chloroform. In: Collins VJ (ed) Physiologic and pharmacologic bases of anesthesia. Williams & Wilkins, Pennsylvania, pp 650–662
5. Cheesbrough M (1998) District laboratory practice in tropical countries, part 1. Cambridge University Press, Cambridge