The OpenFlexure Project. The technical challenges of Co-Developing a microscope in the UK and Tanzania. - Julian Stirling; Valerian L. Sanga; Paul T. Nyakyi; Grace A. Mwakajinga; Joel T. Collins; Kaspar Bumke; Joe Knapper; Qingxin Meng 004; Samuel McDermott; Richard W. Bowman (GHTC, 2020)