Browne, JISchielen, PCJIBelmouden, IPennings, JLAKlipstein-Grobusch, K2025-03-252025-03-2520152568893610.1002/pd.4578https://rivm.openrepository.com/handle/10029/648616Dried blood spot measurement of pregnancy-associated plasma protein A (PAPP-A) and free beta-subunit of human chorionic gonadotropin (beta-hCG) from a low-resource settingArticlePrenat Diagn 2015; 35(6):592-72025-03-25