artículo
Pregnancy outcome associated with natural family planning (NFP): scientific basis and experimental design for an international cohort study
Fecha
1988Registro en:
10.1007/BF01849266
Autor
Simpson, J. L.
Gray, R. H.
Queenan, J. T.
Mena Nannig, Patricia Isabel
Perez. A.
Kambic, R. T.
Tagliabue, G.
Pardo, F.
Stevenson, W. S.
Barbato, M.
Jennings, V. H.
Zinaman, M. J.
Spieler, J. M.
Institución
Resumen
Pregnancy outcome associated with natural family planning (NFP): scientific basis and experimental design for an international cohort study