Webpages, illustrations and animations have been designed and developed by Sigurd Erik Hoelsbrekken, currently working at the department of orthopedic surgery, Kongsvinger Hospital. The purpose of the pages is to provide information to former and present participants in the relevant clinical trials, the webpages have no commercial incentives and have been made without commercial sponsorship. Please use the reply form found below to send requests or comments. For medical questions, please use the personal contact information provided upon consent.