Ohuma, E. O., Papageorghiou, A. T., Villar, J., & Altman, D. G. (2013). Estimation of gestational age in early pregnancy from crown-rump length when gestational age range is truncated: The case study of the INTERGROWTH-21(st) Project. BioMed Central.
استشهاد بنمط شيكاغوOhuma, Eric O., Aris T. Papageorghiou, Jose Villar, و Douglas G. Altman. Estimation of Gestational Age in Early Pregnancy From Crown-rump Length When Gestational Age Range Is Truncated: The Case Study of the INTERGROWTH-21(st) Project. BioMed Central, 2013.
MLA استشهادOhuma, Eric O., Aris T. Papageorghiou, Jose Villar, و Douglas G. Altman. Estimation of Gestational Age in Early Pregnancy From Crown-rump Length When Gestational Age Range Is Truncated: The Case Study of the INTERGROWTH-21(st) Project. BioMed Central, 2013.