1 Department of Chemical and Biomolecular Engineering and Institute for NanoBiotechnology, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Oncology and Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Electronic address: hcui6@jhu.edu.
2 Louvain Drug Research Institute, Catholic University of Louvain, Brussels, Belgium. Electronic address: ana.beloqui@uclouvain.be.
3 Faculté de Pharmacie, Université de Montréal, 2940 Chemin de Polytechnique, Montréal, Québec H3T 1J4, Canada. Electronic address: davide.brambilla@umontreal.ca.
4 University of Padua, Department of Pharmaceutical and Pharmacological Sciences, Padova, Italy. Electronic address: paolo.caliceti@unipd.it.
5 Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan. Electronic address: yunching@mx.nthu.edu.tw.
6 The Center for Nanomedicine at the Wilmer Eye Institute, Department of Ophthalmology, Johns Hopkins University School of Medicine, Baltimore, MD 21231, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Departments of Pharmacology and Molecular Sciences, Biomedical Engineering, Gynecology and Obstetrics, Oncology, and Division of Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. Electronic address: lensign@jhmi.edu.
7 College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea. Electronic address: jongohkim@yu.ac.kr.
8 Department of Nanomedicine and Theranostics, Institute for Experimental Molecular Imaging, Center for Biohybrid Medical Systems, University Hospital RWTH Aachen, Aachen, Germany. Electronic address: tlammers@ukaachen.de.
9 Department of Materials Engineering, The University of Tokyo, Bunkyo-Ku, Japan. Electronic address: miyata@g.ecc.u-tokyo.ac.jp.
10 Seoul National University Nano Biodrug Delivery Lab, Republic of Korea. Electronic address: ohyk@snu.ac.kr.
11 The Shmunis School of Biomedicine and Cancer Research, Tel Aviv University, Tel Aviv, Israel. Electronic address: peer@tauex.tau.ac.il.
12 School of Pharmacy and Pharmaceutical Sciences, The University of Queensland, Woolloongabba, Queensland, Australia. Electronic address: a.popat@uq.edu.au.
13 University Medical Centre Utrecht Laboratory of Clinical Chemistry and Haematology, Utrecht, Netherlands. Electronic address: R.Schiffelers@umcutrecht.nl.
15 West China School of Pharmacy, Key Laboratory of Drug Targeting and Drug Delivery System, Sichuan University, Chengdu, China. Electronic address: sunxun@scu.edu.cn.
16 University Medical Centre Utrecht, Utrecht, Netherlands. Electronic address: pvader@umcutrecht.nl.
17 Department of Industrial and Molecular Pharmaceutics, Purdue University, 575 Stadium Mall Drive, West Lafayette, IN 47907, USA; Weldon School of Biomedical Engineering, Purdue University, 206 S. Martin Jischke Drive, West Lafayette, IN 47907, USA. Electronic address: yyeo@purdue.edu.
18 Institute of Functional Nano and Soft Materials, Soochow University, Suzhou, China. Electronic address: lcyin@suda.edu.cn.
19 School of Pharmacy, Sungkyunkwan University Suwon, Republic of Korea. Electronic address: ysyoun@skku.edu.
20 College of Pharmaceutical Sciences and International College of Pharmaceutical Innovation, Soochow University, Suzhou, China. Electronic address: zyzhong@suda.edu.cn.
21 Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium. Electronic address: stefaan.desmedt@Ugent.be.