Citing multiple Japanese authors
This is the right way according to citethisforme:

Tadaka, E., Kono, A., Ito, E., Kanaya, Y., Dai, Y., Imamatsu, Y., &amp; Itoi, W. (2016). Development of a community’s self-efficacy scale for preventing social isolation among community-dwelling older people (Mimamori Scale). BMC Public Health, 16(1). http://dx.doi.org/10.1186/s12889-016-3857-4

One specific advise: If there is a DOI, include the DOI in the citation. Links are not persistent, DOIs are.