Funding for this research was provided by:
Luonnontieteiden ja Tekniikan Tutkimuksen Toimikunta (268378 and 273571, 253579)
Received: 3 July 2018
Accepted: 27 September 2019
First Online: 4 November 2019
: H.J.N., E.L., K.P.H.P. and E.H. are inventors in patent applications related to drug delivery and own stocks in Swan Cytologics Inc. Other authors report no conflicts of interest.