- Evaluation of the 4-pyridinemethanol WR 180,409 (enpiroline) in the treatment of induced Plasmodium falciparum infections in healthy, non-immune subjects. Cosgriff, T.M., Boudreau, E.F., Pamplin, C.L., Berman, J.D., Shmuklarsky, M.J., Canfield, C.J. Am. J. Trop. Med. Hyg. (1984)