Adua, Eric
Frimpong, Kwasi
Li, Xia
Wang, Wei
Article History
Received: 18 June 2017
Accepted: 17 July 2017
First Online: 18 August 2017
Compliance with ethical standards
:
: None sought.
: EA is supported by Edith Cowan University under the International Postgraduate Research Scholarship. WW is supported by the Importation and Development of High-Calibre Talents, Taishan Medical University, China.
: The authors declare that they have no conflict of interest.