Iñiguez G, Argandoña F, Medina P, González C, San Martín S, Kakarieka E, Johnson MC, Cassorla F. Acid-Labile Subunit (ALS) Gene Expression and Protein Content in Human Placentas: Differences According to Birth Weight. The Journal of Clinical Endocrinology & Metabolism. 2011 Jan;96(1):187–91. doi: 10.1210/jc.2010-0244.