@article{doi:,
author = {Kurtoğlu, Emel and Perçin, Zühal},
title = {The Association of the First Trimester Concentrations of Maternal PAPP-A and Free Beta-hCG With Pregnancy Complications},
journal = {Van Med J},
volume = {19},
number = {2},
pages = {60-65},
year = {2012},
doi = {},
note ={doi: },

URL = {https://dx.doi.org/},
eprint = {https://dx.doi.org/}
}