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References

  • 1
    Awwad J, Usta IM, Succar J, Musallam KM, Ghazeeri G, Nassar AH. The effect of maternal fasting during Ramadan on preterm delivery: a prospective cohort study. BJOG 2012;119:137986.
  • 2
    Mayo NE, Goldberg MS. When is a case–control study not a case-control study? J Rehabil Med 2009;41:20916.
  • 3
    Niven DJ, Berthiaume LR, Fick GH, Laupland KB. Matched case–control studies: a review of reported statistical methodology. Clin Epidemiol 2012;4:99110.
  • 4
    Kuroki LM, Allsworth JE, Peipert JF. Methodology and analytic techniques used in clinical research: associations with journal impact factor. Obstet Gynecol 2009;114:87784.