David L Kaplan1, Randall T Moon2
& Gordana Vunjak-Novakovic31
David L. Kaplan is in the Department of Biomedical Engineering, Tufts University, 4 Colby Street, Medford, Massachusetts 02155, USA. david.kaplan@tufts.edu
2
Randall T. Moon is in the Department of Pharmacology, University of Washington School of Medicine and Howard Hughes Medical Institute, Box 357750, Seattle, Washington 98195 USA.
3
Gordana Vunjak-Novakovic is in the Department of Biomedical Engineering, Columbia University, 351 Engineering Terrace, 1210 Amsterdam Avenue, New York, New York 10025, USA.