@article {galanis2017methodological,
	title = {Methodological design of studies},
	journal = {ARCHIVES OF HELLENIC MEDICINE},
	volume = {34},
	number = {4},
	year = {2017},
	pages = {559{\textendash}566},
	publisher = {ATHENS MEDICAL SOC 23 MAEANDROU ST, ATHENS, 115 28, GREECE},
	author = {Galanis, P}
}
