@misc{Vreugdenhil2019, author = {Vreugdenhil, Maria M. T. and Ranke, Sander and de Man, Yvonne and Haan, Maaike M. and Kool, Rudolf B.}, month = {feb}, title = {Patient and Health Care Provider Experiences With a Recently Introduced Patient Portal in an Academic Hospital in the Netherlands: Mixed Methods Study (Preprint)}, year = {2019} }