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Dyfyniad Arddull ChicagoWei, Jun, Suzhen Ran, Zhengchun Yang, Yun Lin, Jing Tang, and Haitao Ran. Prenatal Ultrasound Screening for External Ear Abnormality in the Fetuses. Hindawi Limited, 2014.
Dyfyniad MLAWei, Jun, et al. Prenatal Ultrasound Screening for External Ear Abnormality in the Fetuses. Hindawi Limited, 2014.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.