title: Authors' reply to de Vries.
authors.affiliation: Department of Epidemiology Research, National Health Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark.
authors.forename: Marie
authors.initials: M
authors.lastname: Lund
authors.affiliation: Department of Epidemiology Research, National Health Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark.
authors.forename: Björn
authors.initials: B
authors.lastname: Pasternak
authors.affiliation: Department of Epidemiology Research, National Health Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark.
authors.forename: Jan
authors.initials: J
authors.lastname: Wohlfahrt
authors.affiliation: Department of Epidemiology Research, National Health Surveillance and Research, Statens Serum Institut, Copenhagen, Denmark Department of Medicine, Stanford University School of Medicine, Stanford, USA.
authors.forename: Mads
authors.initials: M
authors.lastname: Melbye
mesh_terms: D000900:Anti-Bacterial Agents / Q000009:adverse effects*; D005260:Female; D006801:Humans; D018942:Macrolides / Q000009:adverse effects*; D008297:Male; D011247:Pregnancy; D046248:Pyloric Stenosis, Hypertrophic / Q000139:chemically induced*
chemical_list: D000900:Anti-Bacterial Agents; D018942:Macrolides