by Keystone, J.S., Proctor, E., Glenn, C., McIntyre, L.
Published in Transactions of the Royal Society of Tropical Medicine and Hygiene (1983)

by Keystone, J.S., Kozarsky, Phyllis
Published in Journal of travel medicine (01.03.1995)

by Keystone, J.S.
Published in The Lancet (British edition) (03.12.1994)

by Keystone, J.S.
Published in New England Journal of Medicine (03.10.1996)

by Keystone, J.S
Published in The New England Journal of Medicine (03.10.1996)

by Keystone, J.S.
Published in Canadian Medical Association Journal (19.11.1977)

by Meskin, S., Jacob, M.S., Macaden, R., Keystone, J.S., Kozarsky, P.E., Ramachadran, A.N., Metchock, B.
Published in Transactions of the Royal Society of Tropical Medicine and Hygiene (01.07.1992)

by Graves, P.M, Carter, R, Keystone, J.S, Seeley, D.C., jr
Published in The American journal of tropical medicine and hygiene (01.03.1984)

by Nguyen, C., Gregson, D., Mouldey, P., Keystone, J.S.
Published in Transactions of the Royal Society of Tropical Medicine and Hygiene (01.07.1989)

by Murdoch, J.K, Keystone, J.S
Published in Annals of internal medicine (01.12.1983)

by Krajden, S, Keystone, J.S, Glenn, C
Published in The American journal of tropical medicine and hygiene (01.11.1983)

by Yang, J, Keystone, J.S, McIntyre, L, Spence, H
Published in Canadian veterinary journal (01.01.1982)

by McIntyre, L, Krajden, S, Keystone, J.S
Published in Tropical and geographical medicine (01.01.1983)