TY - JOUR T1 - An analysis of the parental age effect for inv dup (15). JF - Journal of Medical Genetics JO - J Med Genet SP - 213 LP - 214 DO - 10.1136/jmg.21.3.213 VL - 21 IS - 3 AU - J M Connor AU - D H Gilmore Y1 - 1984/06/01 UR - http://jmg.bmj.com/content/21/3/213.abstract N2 - Parental ages and birth order were analysed in 16 sporadic cases of inv dup (15) using the method of Smith. A significant maternal age effect was apparent (dm = 5.989, SE 1.86; df = 2.02, SE 2.496; db = 0.138, SE 0.46). ER -