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Kamstrup-Larsen N, Dalton SO, Grønbæk M, Broholm-Jørgensen M, Thomsen JL, Larsen LB, Johansen C, Tolstrup J.Kamstrup-Larsen N, et al. Among authors: thomsen jl.BMJ Open. 2019 Sep 18;9(9):e029180. doi: 10.1136/bmjopen-2019-029180.BMJ Open. 2019.PMID: 31537563Free PMC article.Clinical Trial.