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23. The use of twins in clinical research. Nance WE Birth Defects Orig Artic Ser; 1977; 13(6):19-44. PubMed ID: 562690 [No Abstract] [Full Text] [Related]
24. [Contribution of hereditary factors to the variability of growth at different stages of individual development (twin studies)]. Ivanov VP Tsitol Genet; 1983; 17(1):56-60. PubMed ID: 6221459 [TBL] [Abstract][Full Text] [Related]
25. The frequency of recurrent multiple maternities using two sets of census data in Japan: 1990 and 1995. Imaizumi Y; Nishida E Twin Res Hum Genet; 2007 Aug; 10(4):638-43. PubMed ID: 17708705 [TBL] [Abstract][Full Text] [Related]
26. Twin research: past and present. Gedda L; Brenci G; Tripodi F Prog Clin Biol Res; 1982; 103 Pt A():345-50. PubMed ID: 6891783 [No Abstract] [Full Text] [Related]
27. Observed frequency of monozygotic twinning in Holstein dairy cattle. del Río NS; Kirkpatrick BW; Fricke PM Theriogenology; 2006 Sep; 66(5):1292-9. PubMed ID: 16766024 [TBL] [Abstract][Full Text] [Related]
28. Sex ratio of twin births in Japan. Imaizumi Y Hum Hered; 1982; 32(2):106-13. PubMed ID: 7095812 [TBL] [Abstract][Full Text] [Related]
29. Absence of palmar digital triradius d in Japanese twins and their families. Okajima M; Iwayanagi C; Inouye E Jinrui Idengaku Zasshi; 1982 Mar; 27(1):27-34. PubMed ID: 7202067 [No Abstract] [Full Text] [Related]
30. Evidence for a low upper limit of heritability of mental test performance in a national sample of twins. Adams B; Ghodsian M; Richardson K Nature; 1976 Sep; 263(5575):314-6. PubMed ID: 986563 [No Abstract] [Full Text] [Related]
31. A twin study of cytogenetic variability. Progress report. Gedda L; Del Porto G; Brenci G; D'alessandro E; Di Fusco C; Di Tonto B Acta Genet Med Gemellol (Roma); 1977; 26(3-4):275-6. PubMed ID: 566017 [No Abstract] [Full Text] [Related]
32. Some perinatal characteristics of monozygotic twins who are dichorionic. Machin G; Bamforth F; Innes M; McNichol K Am J Med Genet; 1995 Jan; 55(1):71-6. PubMed ID: 7702101 [TBL] [Abstract][Full Text] [Related]
33. The study of human twins in medical research. Hrubec Z; Robinette CD N Engl J Med; 1984 Feb; 310(7):435-41. PubMed ID: 6363927 [No Abstract] [Full Text] [Related]
34. Biological variables in height growth of Japanese twins: a comparison with those of singletons. Ali MA; Ashizawa K; Kato S; Kouchi M; Koyama C; Hoshi H Ann Hum Biol; 2007; 34(3):283-95. PubMed ID: 17612860 [TBL] [Abstract][Full Text] [Related]
35. The role of twin studies in human quantitative genetics. Nance WE Prog Med Genet; 1979; 3():73-107. PubMed ID: 392599 [No Abstract] [Full Text] [Related]
36. [Control of breathing in twins]. Yoshikawa T Nihon Kyobu Shikkan Gakkai Zasshi; 1981 Dec; 19(12):974-83. PubMed ID: 6965215 [No Abstract] [Full Text] [Related]
37. Scope and methodology of twin studies. Allen G Acta Genet Med Gemellol (Roma); 1976; 25():79-85. PubMed ID: 1036393 [No Abstract] [Full Text] [Related]
38. Genetic and teratological considerations in the analysis of concordant and discordant abnormalities in twins. Gericke GS S Afr Med J; 1986 Jan; 69(2):111-4. PubMed ID: 3510462 [TBL] [Abstract][Full Text] [Related]
39. Sexual orientation in a U.S. national sample of twin and nontwin sibling pairs. Kendler KS; Thornton LM; Gilman SE; Kessler RC Am J Psychiatry; 2000 Nov; 157(11):1843-6. PubMed ID: 11058483 [TBL] [Abstract][Full Text] [Related]