Reply to the Comments by Drs Aalen and Hougaard on ‘The Current Duration Approach to Estimating Time to Pregnancy’ by Niels Keiding et al.

Authors


Niels Keiding, Department of Biostatistics, University of Copenhagen, P.O. Box 2099, DK-1014 Copenhagen K, Denmark.
E-mail: nike@sund.ku.dk

Ancillary