Book Review AIDS and AIDS Risk Patient Care Edited by Hans Jäger. 223 pp., illustrated. Chichester, U.K., Ellis Horwood, 1988. $49.95. (Distributed in the U.S. by Halsted Press/John Wiley, New York.) (Original German title: Psychosoziale Betreuung von AIDS-Vorfeldpatienten. Translated by Jacqui Welch. Translation editor: J.L. Francis.) The Medical Management of AIDS Edited by Merle A. Sande and Paul A. Volberding. 383 pp., illustrated. Philadelphia, W.B. Saunders, 1988. $30.