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An investigation of the variation of level of lesion of spinabifida in all births in the presence and absence of maternal folicacid supplementation in China, 1993-1996
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Clinical Evaluation and Validation of Laboratory Methods for the
Diagnosis of Bordetella pertussis Infection: Culture, Polymerase
Chain Reaction (PCR), and Anti-Pertussis Toxin IgG Serology
(IgG-PT)
2 of 3
Adenoid Cystic Carcinoma of the Head and Neck; Incidence and
survival trends based on 1973-2007 SEER data
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