Comment on

• A measurement of the atomic hydrogen Lamb shift and the proton charge radius.

  Bezginov N, Valdez T, Horbatsch M, Marsman A, Vutha AC, Hessels EA. Bezginov N, et al. Science. 2019 Sep 6;365(6457):1007-1012. doi: 10.1126/science.aau7807. Science. 2019. PMID: 31488684
• A small proton charge radius from an electron-proton scattering experiment.

  Xiong W, Gasparian A, Gao H, Dutta D, Khandaker M, Liyanage N, Pasyuk E, Peng C, Bai X, Ye L, Gnanvo K, Gu C, Levillain M, Yan X, Higinbotham DW, Meziane M, Ye Z, Adhikari K, Aljawrneh B, Bhatt H, Bhetuwal D, Brock J, Burkert V, Carlin C, Deur A, Di D, Dunne J, Ekanayaka P, El-Fassi L, Emmich B, Gan L, Glamazdin O, Kabir ML, Karki A, Keith C, Kowalski S, Lagerquist V, Larin I, Liu T, Liyanage A, Maxwell J, Meekins D, Nazeer SJ, Nelyubin V, Nguyen H, Pedroni R, Perdrisat C, Pierce J, Punjabi V, Shabestari M, Shahinyan A, Silwal R, Stepanyan S, Subedi A, Tarasov VV, Ton N, Zhang Y, Zhao ZW. Xiong W, et al. Nature. 2019 Nov;575(7781):147-150. doi: 10.1038/s41586-019-1721-2. Epub 2019 Nov 6. Nature. 2019. PMID: 31695211