Increased amount of regulatory T cells may be required in attaining an ongoing uncomplicated pregnancy after unexplained recurrent pregnancy loss. (1st September 2021) - Krop, Juliette; Hoorn, Marie-Louise van der; Kapsenberg, Hanneke; van der Keur, Carin; Koning, Frits; Claas, Frans; Heidt, Sebastiaan; Eikmans, Michael