1. Similar Goiters in Monozygotic Twins;Neel;Surgery,1939
2. Lichen Planus Confined to Oral Cavity in Twins; Report of Case;Epstein;Arch. Dermat. & Syph,1942
3. Fatal Anaphylactic Shock, Occurrence in Identical Twins Following Second Injection of Diphtheria Toxoid and Pertussis Antigen;Werne;J. A. M. A,1946
4. Untersuchungen über allergische Erkrankungen bei Zwillingen;Spaich;Ztschr. f. menschl. Vererb.-u. Konstitutionslehre,1936