title: De novo chromosomal abnormalities and month of conception. Data from the southern hemisphere.
authors.forename: Enrique
authors.initials: E
authors.lastname: Gadow
authors.forename: Florencia
authors.initials: F
authors.lastname: Petracchi
authors.forename: Fernando A
authors.initials: FA
authors.lastname: Poletta
authors.forename: Eduardo E
authors.initials: EE
authors.lastname: Castilla
mesh_terms: D000649:Amniocentesis; D001118:Argentina; D015193:Chorionic Villi Sampling; D002869:Chromosome Aberrations; D025063:Chromosome Disorders / Q000235:genetics; D002882:Chromosomes, Human, Pair 13; D005260:Female; D005306:Fertilization; D006801:Humans; D007558:Italy; D011247:Pregnancy; D012621:Seasons; D014314:Trisomy