1. Anonymous: Report of the committee on infectious disease, 21st Ed., Peter G, et al, Eds: Elk Grove Village, IL: American Academy of Pediatrics, 1988, pp. 277-289
2.
2. Literature search: Medline 1966-1989
3.
3. Anonymous: MMWR38:205-228, 1989
4.
4. Briggs GG, Freeman RK, Yaffe SJ: Drugs in Pregnancy and Lactation: a Reference Guide to Fetal and Neonatal Risk, 2nd ed.Baltimore, MD: Williams and Wilkins, 1986, pp. 462-464
