1. Jong EC: Medical approach to the traveling patient. In: Jong EC, ed. The Travel and Tropical Medicine Manual. Philadelphia, WB Saunders, 1987: 3–7.
2. Jones TC: Health advice and immunizations for travelers. In: Remington JS, Swartz, MN, eds. Current Clinical Topics in Infectious Diseases, Vol 6. New York, McGraw-Hill, 1985: 40–65.
3. Mann JM: Emporiatric policy and practice: Protecting the health of Americans abroad. JAMA 1983; 249: 3323–3325.
4. Denny SC, ed: Travel Health Information Service, Vol 1 (Sect A): Medical Reference Guide. Milwaukee, Shoreland Medical Marketing, 1986.
5. Hook, EW III, Holmes KK: Gonococcal infections. Ann Intern Med 1985; 102: 229–243.