Ключевые слова: ache, aged, anxious, arthritis, back, back pain, backache, body pain, breast, cardiac, caucasian, chronic, cramp, disease, elderly, emergency, health, health care, healthcare and medicine, human, illness, male, man, medicine, muscle pain, old, older people, outdoors, pain, pensioner, people, person, problem, retired man, retirement, rheumatism, senior, senior adult, senior men, sick, spine, sprain, stroke, suffer, touching, troubled, unhealthy, upset, worried,