REFERENCES
- Becker, K. L.: Pedigree analysis. 1. Dominance, recessiveness and sex-linkage. Postgrad Med 40:6 (July) 1966.
- Vandenberg, S. G., McKusick, V. A. and McKusick, A. B.: Twin data in support of the Lyon hypothesis. Nature 194:505 (May 5) 1962.
- Becker, K. L.: Pedigree analysis. 2. Clinical discrepancies and limitations. Postgrad Med 40:171 (August) 1966.
- Morton, R. F. and Morton, K. C.: Twin transfusion syndrome. Obstet Gynec 26:180 (August) 1965.
- Kononen, E., MacDonald, W. B. and Vos, G. H.: Cyanotic congenital heart disease (trilogy of Fallot) in one of identical twins. Aust Paediat J 2:53 (March) 1966.
- Osborne, D. and Simcock, J.: Myasthenia gravis in identical twins. Brit Med J 1(5494):1025 (April 23) 1966.
- Goh, K. and Swisher, S. N.: Identical twins and chronic myelocytic leukemia. Arch Intern Med 115: 475 (April) 1965.
- Juel-Nielsen, N.: Individual and environment. Acta Psychiat Scand Suppl 183:1, 1965.
- Pollin, W., Stabenau, J. R. and Tupin, J.: Family studies in identical twins discordant for schizophrenia. Psychiatry 28:60 (February) 1965.
- Gesell, A. and Thompson, H.: Learning and growth in identical infant twins: An experimental study by the method of co-twin control. Genet Psychol Monogr 6:1 (July-December) 1929.
- Weatherly, J. and Deabler, H. L.: Five-year follow-up of schizophrenic identical twins one of whom was lobotomized. J Nerv Ment Dis 127:95 (July) 1958.
- Plkkarainen, J., Takkunen, J. and Kulonen, E.: Serum cholesterol in Finnish twins. Amer J Hum Genet 18:115 (March) 1966.
- Gottesman, I. I. and Shields, J.: Schizophrenia in twins; 16 years consecutive admissions to a psychiatric clinic. Brit J Psychiat 112:809 (August) 1966.
- Kallmann, F. J.: Twin and sibship study of overt male homosexuality. Amer J Hum Genet 4: 136 (June) 1952.
- Jarvik, L. F. and Falek, A.: Comparative data on cancer in aging twins. Cancer 15:1009 (September- October) 1962.
- Fuller, J. L. and Thompson, W. R.: Behavior Genetics. New York and London, John Wiley & Sons Inc., 1960.
- Allen, G.: Twin research: Problems and prospects. In Steinberg, A. G. and Bearn, A. G. (Editors): Progress in Medical Genetics. New York and London, Grune & Stratton, Inc., 1965, chap. 8, pp. 242–269.
- Mijsberg, W. A.: Genetic-statistical data on the presence of secondary oocytary twins among non- identical twins. Acta Genet 7:39, 1957.
- Turpin, R., Lejeune, J., Lafourcade, J., Chigot, P.-L. and Salmon, C.: Présomption de monozygotisme en dépit d'un dimorphisme sexuel: Sujet masculin XY et sujet neutre Haplo-X. C R Acad Sci 252:2945, 1961.