Funding for this research was provided by:
Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education (NRF-2016R1D1A1B02015366)
Text and Data Mining valid from 2018-03-16
Received: 21 November 2017
Accepted: 5 March 2018
First Online: 16 March 2018
Compliance with ethical standards
: The authors declare they have no conflicts of interest.
: BTM samples were collected by dairy farmers during daily milk collection after obtaining verbal consent, and consequently, sample collection did not require ethical approval from any authority. The same was true for the study protocol. In addition, collection of BTM is neither harmful nor a threat to animal welfare. This study did not involve any endangered or protected species.