@article{Krebs1997,
author = {Krebs, L. and Johansen, A.M. and Helweg-Larsen, K.},
title= {Reporting of induced abortions in 1994. A comparison between the data in the Registry of Legally Induced Abortions and the National Patient Registry},
year = {1997},
journal = {Ugeskr Laeger},
volume = {159},
number = {11},
pages = {1607--1611},
}