Oral labetalol versus nifedipine in preterm preeclampsia with severe features: a multicenter study evaluating pregnancy latency. - Meyer JA; Torres AM; Friedman S; Muoser CA; Futterman I; Peterson J; Martinez ML; Vani K; Bianco A; Hade EM; Roman AS; Penfield CA (American journal of obstetrics & gynecology MFM, 2025)