@book{2990,
	author = {Estrella, Emmanuel P. },
	title = {Investigation on the level of evidence in researches done by orthopedic residents of the Department of Orthopedics, Philippine General Hospital over the past twenty-seven years /},
	url = {https://actamedicaphilippina.upm.edu.ph/index.php/acta/article/view/2164/1579}
}