title: Author's reply to den Hartog.
authors.forename: A J
authors.initials: AJ
authors.lastname: Spaans
authors.forename: J A A M
authors.initials: JA
authors.lastname: van den Hout
authors.forename: S B T
authors.initials: SB
authors.lastname: Bolder
mesh_terms: D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D019060:Minimally Invasive Surgical Procedures / Q000009:adverse effects*; D011183:Postoperative Complications / Q000453:epidemiology*