There are 3 studies that match your criteria (2 of which are reviews, comments, or miscellaneous).
Criteria: Study Type=In Vitro,Freq Range=300 kHz - 300 GHz (RF/mmW/THz),Study Subtype=5G

View This Study - Citation No: 7376
Title	A study on biological effects of low-intensity millimeter waves.
Reference	IEEE Trans. Plasma Sci., Vol. 30, Pg. 1489 - 1496, 2002
Author(s)	Yu G., Coln E. A., Schoenbach K. H., Gellerman M., Fox P., et al. .
PubMed UID
Project ID	2856
View This Study - Citation No: 7719 (Literature Review)
Title	Adverse health effects of 5G mobile networking technology under real-life conditions.
Reference	Toxicol Lett., Vol. 323, Pg. 35 - 40, 2020
Author(s)	Kostoff R. N., Heroux P., Aschner M., Tsatsakis A.
PubMed UID	31991167
Project ID	2856
View This Study - Citation No: 7730 (Literature Review)
Title	5G mobile networks and health - a state-of-the-science review of the research into low-level RF fields above 6 GHz.
Reference	Journal of Exposure Science & Environmental Epidemiology. , Vol. https://doi.org/10.1038/s41370-021-00297-6, Pg. - , 2021
Author(s)	Karipidis K., Mate R., Urban D., Tinker R., Wood A.
PubMed UID
Project ID	2856