Comment on: Pregnancy and undifferentiated connective tissue disease: outcome and risk of flare in 100 pregnancies: reply. (16th March 2020) - Zucchi, Dina; Tani, Chiara; Monacci, Francesca; Elefante, Elena; Carli, Linda; Parma, Alice; Stagnaro, Chiara; Ferro, Francesco; Gori, Sabrina; Strigini, Francesca Anna Letizia; Mosca, Marta