Meeting the old man's friend.
Torres
Antoni
A
Menéndez
Rosario
R
D000367:Age Factors; D000368:Aged; D017714:Community-Acquired Infections / Q000453:epidemiology; D005060:Europe / Q000453:epidemiology; D005260:Female; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D015994:Incidence; D008297:Male; D011014:Pneumonia / Q000453:epidemiology*