Authors:
Espinos, JJ
Rodriguez-Espinosa, J
Senosiain, R
Aura, M
Vanrell, C
Gispert, M
Vega, C
Calaf, J
Citation: Jj. Espinos et al., The role of matching menstrual data with hormonal measurements in evaluating effectiveness of postcoital contraception, CONTRACEPT, 60(4), 1999, pp. 243-247