TY - GEN AU - Keirse,Marc J N C TI - Progesterone and preterm: seventy years of "déjà vu" or "still to be seen"? SN - 0730-7659 PY - 2004///1202 N1 - Publication Type: Comment; Journal Article UR - https://doi.org/10.1111/j.0730-7659.2004.00315.x ER -