[On congenital abnormalities in the past 6 years in our department].
D000367:Age Factors; D000013:Congenital Abnormalities / Q000453:epidemiology*; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007564:Japan; D008297:Male; D011247:Pregnancy; D011248:Pregnancy Complications; D012621:Seasons