@article{article,
title = {Reference values of IgA, IgG, IgM, alpha2-macroglobulin, alpha-1- antitrypsin, complement C3, complement C4, ceruloplasmin, haptoglobin, properdin factor B, acid alpha-1 glycoprotein and transferrin concentration in the blood of healthy children},
author = {},
year = {1983},
journal = {Klinische Padiatrie},
volume = {195},
number = {2},
pages = {107-116},
howpublished = "\url{https://eurekamag.com/research/068/629/068629625.php}"
}