Evaluation of fetal and maternal genetic variation in the progesterone receptor gene for contributions to preterm birth.
Ehn NL, Cooper ME, Orr K, Shi M, Johnson MK, Caprau D, Dagle J, Steffen K, Johnson K, Marazita ML, et al.
Pediatr Res. 2007 Nov; 62(5):630-5.
[Pediatr Res. 2007]