id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
cord-295806-imuk73xa	Ramirez-Moreno, J. M.	Mask-associated de novo headache in healthcare workers during the Covid-19 pandemic.	2020-08-11		.txt	text/plain	3987	186	49	self-filtering masks of particles and liquid aerosols (FFP), average number of hours of use per day) and use of other protective devices (glasses or screens); (4) frequency and characteristics of pre-existing primary headache (changes in headache frequency, attack duration and frequency, as well as drug use and response), (5) the main variable of the study was personal opinion about the presence of new headache in the period in which these protective systems were mandatory (duration of headache episode, intensity and frequency, as well as drug use and response); (6) presence of other symptoms potentially associated with the use of facial protection equipment (fatigue, sleep disorder, lack of concentration, irritability, nausea or vomiting or others); (7) we evaluated the selfperceived impact of the presence of new-onset headache using the Likert scale on social, occupational, family and personal aspects; (8) we also evaluated the self-perceived impact that headache conditions have on the performance of work activities and (9) lastly, we analyzed self-perceived work stress by means of the Psychosomatic Problems Questionnaire (PPQ) [13] .	./cache/cord-295806-imuk73xa.txt	./txt/cord-295806-imuk73xa.txt