“…The reason for this could be that the actual qualitative study was part of a larger research project that had gained ethical approval for the whole project (Burke, Wood, Zabel, Clark, & Morrison, 2016; Kidd et al, 2016; Singh, Jakhaia, Amonashvili, & Winch, 2016). Two of the reviewed studies, one from Denmark (Bjørkedal, Torsting, & Møller, 2016) and one from the Netherlands (van Langen, Beentjes, van Gaal, der Sanden, & Goossens, 2016), indicated that they had consulted their ethics boards, which had replied that no ethical approval was needed. Both of these studies, however, as well as most of the others included, were conducted in line with the principles of the Declaration of Helsinki (2013) and the key ethical principles of autonomy, confidentiality, protection, do no harm and informed consent.…”