DOI:
10.1055/s-00028422
Ultrasound International Open
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References
Lawn JE, Gravett MG, Nunes TM, Rubens CE, Stanton C.
Global report on preterm birth and stillbirth (1 of 7): definitions, description of the burden and opportunities to improve data.
BMC Pregnancy Childbirth 2010;
10 (Suppl. 01) S1
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