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Has there been an increased interest in smoking cessation during the first months of the COVID-19 pandemic? A Google Trends study.

Heerfordt C, Heerfordt IM. Heerfordt C, et al. Among authors: heerfordt im. Public Health. 2020 Jun;183:6-7. doi: 10.1016/j.puhe.2020.04.012. Epub 2020 Apr 20. Public Health. 2020. PMID: 32388011 Free PMC article.

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Photoprotection by sunscreen depends on time spent on application.

Heerfordt IM, Torsnes LR, Philipsen PA, Wulf HC. Heerfordt IM, et al. Photodermatol Photoimmunol Photomed. 2018 Mar;34(2):117-121. doi: 10.1111/phpp.12373. Epub 2017 Dec 27. Photodermatol Photoimmunol Photomed. 2018. PMID: 29235160

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A Handful of Sunscreen for Whole-Body Application.

Heerfordt IM, Philipsen PA, Wulf HC. Heerfordt IM, et al. Adv Exp Med Biol. 2020;1268:381-385. doi: 10.1007/978-3-030-46227-7_19. Adv Exp Med Biol. 2020. PMID: 32918229 Clinical Trial.

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Sunscreen use at Danish beaches and how to improve coverage.

Heerfordt IM. Heerfordt IM. Dan Med J. 2018 Apr;65(4):B5476. Dan Med J. 2018. PMID: 29619938 Free article. Review.

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Sunscreen use optimized by two consecutive applications.

Heerfordt IM, Torsnes LR, Philipsen PA, Wulf HC. Heerfordt IM, et al. PLoS One. 2018 Mar 28;13(3):e0193916. doi: 10.1371/journal.pone.0193916. eCollection 2018. PLoS One. 2018. PMID: 29590142 Free PMC article.

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Sun behaviour on the beach monitored by webcam photos.

Heerfordt IM, Philipsen PA, Wulf HC. Heerfordt IM, et al. Public Health. 2018 Feb;155:88-90. doi: 10.1016/j.puhe.2017.11.018. Epub 2018 Jan 9. Public Health. 2018. PMID: 29328978

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Trends in erythrocyte protoporphyrin IX concentration by age, sex and season among patients with erythropoietic protoporphyria-20 years of follow-up.

Heerfordt IM, Lerche CM, Wulf HC. Heerfordt IM, et al. Photodiagnosis Photodyn Ther. 2020 Dec;32:101928. doi: 10.1016/j.pdpdt.2020.101928. Epub 2020 Jul 24. Photodiagnosis Photodyn Ther. 2020. PMID: 32717453

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Daylight photodynamic therapy of actinic keratosis without curettage is as effective as with curettage: a randomized clinical trial.

Heerfordt IM, Wulf HC. Heerfordt IM, et al. J Eur Acad Dermatol Venereol. 2019 Nov;33(11):2058-2061. doi: 10.1111/jdv.15744. Epub 2019 Jul 2. J Eur Acad Dermatol Venereol. 2019. PMID: 31197894 Clinical Trial.

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Light-provoked skin symptoms on the hands of erythropoietic protoporphyria patients related to personal dosimeter measurements, skin symptoms, light protection and priming.

Heerfordt IM, Heydenreich J, Philipsen PA, Lerche CM, Wulf HC. Heerfordt IM, et al. J Photochem Photobiol B. 2020 Dec;213:112054. doi: 10.1016/j.jphotobiol.2020.112054. Epub 2020 Oct 10. J Photochem Photobiol B. 2020. PMID: 33075648

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Long-term Trend in Sunscreen Use among Beachgoers in Denmark.

Heerfordt IM, Philipsen PA, Larsen BØ, Wulf HC. Heerfordt IM, et al. Acta Derm Venereol. 2017 Nov 15;97(10):1202-1205. doi: 10.2340/00015555-2772. Acta Derm Venereol. 2017. PMID: 28815267 Free article.

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