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R.J.\u00a0Klement and R.A.\u00a0Sweeney follow a\u00a0KD occasionally. No other potential conflicts of interest, in particular no financial conflicts of interest, exist. The companies providing product samples for this study had no influence on the design, data collection, or analysis, and none of the authors has any business relationship with them.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"The study was performed in accordance with the ethical standards as laid down in the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards. The protocol was registered on August\u00a06, 2015, under ClinicalTrials.gov identifier NCT02516501 after study approval was granted by the ethics committee of the Bavarian Medical Association (\n                      Landesaerztekammer Bayern\n                      ). Informed consent was obtained from all individual participants included in the study.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical standards"}}]}}