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Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2002 1
2004 1
2006 1
2007 1
2011 3
2012 2
2013 4
2014 1
2015 4
2016 2
2017 1
2019 1
2020 1
2022 1
2023 1
2024 2

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Page 1
Assessment of sleep and sleep disorders in geriatric patients.
Frohnhofen H, Popp R, Stieglitz S, Netzer N, Danker-Hopfe H. Frohnhofen H, et al. Among authors: popp r. Z Gerontol Geriatr. 2020 Mar;53(2):100-104. doi: 10.1007/s00391-019-01670-9. Epub 2019 Dec 20. Z Gerontol Geriatr. 2020. PMID: 31863167 Review. English.
[Sleep and pain: a bi-directional relation?].
Pieh C, Popp R, Geisler P, Hajak G. Pieh C, et al. Among authors: popp r. Psychiatr Prax. 2011 May;38(4):166-70. doi: 10.1055/s-0030-1265949. Epub 2011 Mar 16. Psychiatr Prax. 2011. PMID: 21412701 Review. German.
[Sleep and sleep disorders in old age].
Frohnhofen H, Popp R. Frohnhofen H, et al. Among authors: popp r. Dtsch Med Wochenschr. 2022 Mar;147(5):258-268. doi: 10.1055/a-1495-3348. Epub 2022 Feb 28. Dtsch Med Wochenschr. 2022. PMID: 35226925 German.
Oxidative Stress Reaction to Hypobaric-Hyperoxic Civilian Flight Conditions.
Netzer NC, Jaekel H, Popp R, Gostner JM, Decker M, Eisendle F, Turner R, Netzer P, Patzelt C, Steurer C, Cavalli M, Forstner F, Pramsohler S; Hypoxiflight Study Group. Netzer NC, et al. Among authors: popp r. Biomolecules. 2024 Apr 15;14(4):481. doi: 10.3390/biom14040481. Biomolecules. 2024. PMID: 38672497 Free PMC article.
Insomnia symptoms influence CPAP compliance.
Pieh C, Bach M, Popp R, Jara C, Crönlein T, Hajak G, Geisler P. Pieh C, et al. Among authors: popp r. Sleep Breath. 2013 Mar;17(1):99-104. doi: 10.1007/s11325-012-0655-9. Epub 2012 Feb 4. Sleep Breath. 2013. PMID: 22311553
22 results