Conflict of interest
UZ-H and NA-M were employed by SPV TIMSER company. FV were employed by SPV TIMSER company as independent investigator. DT-V was employed by Columbia Biotech Laboratories as independent investigator. UZ-H has a patent pending for GA/18β compound.The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.