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Financial & competing interests disclosure
CL Hansen is a member of the scientific advisory board of Fluidigm corporation and has a financial interest in this company. Fluidigm has provided funding for research in the Hansen group, including the development of high-density digital PCR. CL Hansen has financial interest in a pending patent related to the subject matter of this review, US patent application #20110053151, for a microfluidic device and method of using the same (2011). The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript apart from those disclosed.
No writing assistance was utilized in the production of this manuscript.