Preliminary experience with a 'sub-50' combined oral contraceptive, containing 35 micrograms ethinyl oestradiol and 1 mg norethisterone ('NeoCon')

von Schellen, A M
Veröffentlicht in: Interim guidelines for the control of infections with Vero cytotoxin producing Escherichia coli (VTEC). Subcommittee of the PHLS Working Group on Vero cytotoxin producing Escherichia coli (VTEC) (1980)