N C Wathen, L Perry, R J Lilford, T Chard
Wathen N C, Perry L, Lilford R J, Chard T.
Interpretation of single progesterone measurement in diagnosis of anovulation and defective luteal phase
Br Med J (Clin Res Ed) 1984; 288 :864
doi:10.1136/bmj.288.6420.864-a