Alderson, S L, Wright-Hughes, A, Ford, A C, Farrin, A, Ridd, M J, Herbert, A N & et, A 2022, ' Amitriptyline at low-dose and titrated for irritable bowel syndrome as second-line treatment (The ATLANTIS trial) : protocol for a randomised double-blind placebo-controlled trial in primary care ', Trials, vol. 23, no. 1, 552, pp. 1-12 . https://doi.org/10.1186/s13063-022-06492-6