It remains to be seen, however, if this will be the case in the next few weeks as there are also lots of doubts concerning the authenticity of the said letter. (dailybitcoinnews.com)
As with every theory in science, it initially had to face lots of doubt and criticism. (lindau-nobel.org)
Exactly what I have been doing but having lots of doubts along the way too. (breastfeedingneeds.com)