1. Perinatal infections caused by viruses, toxoplasma and Treponema pallidum;Alford,1980
2. Long-term mental and perceptual defects associated with silent intrauterine infections;Alford,1977
3. The Oslo study of the natural course of untreated syphilis;Clark;Med. Clin. North Am.,1964
4. Prenatal syphilis;Curtis;Med. Clin. North Am.,1964
5. Viral Diseases of the Fetus and Newborn;Hanshaw,1978