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Table 3 Selection of children born in Rinya in 1989 and 1990; # Fish consumption: +++ = often, in critical period certainly; ++= often, in critical period probably; + = occasionally, in critical period probable; (+) = questionable.

From: Population monitoring of trisomy 21: problems and approaches

Congenital anomaly

Date of conception

Critical period

Fish consumption #

Ventricular septal defect + pulmonary atresia

11.05.1988

Days 30–38

+++

Down syndrome

06.04.1989

conception

+*

Stenosis of left bronchus (70%)

20.04.1989

Days 34–44

+

Anal atresia

20.11.1989

Days 36–41

+

Choanal atresia

03.02.1990

Days 44–51

+

Cleft lip, left

20.02.1990

Days 35–50

++

Down syndrome—MZ twins

16.04.1990

conception

+++

Down syndrome—DZ twins

13.04.1990

conception

(+) *

Robin sequence

13.04.1990

Days 49–56

(+)

  1. *RFL polymorphism points to nondisjunction in MII; RFL polymorphism not informative [from 73]