Thirty-nine-year follow-up for the onset age and complication of 828 cases of essential hypertension
17 patients were limp, the prevalence of limp was 26.6%,onset age mainly focused under 40 years.
The initial onset age of reentry tachycardia induced by atrioventricular accessory pathway and dual atrioventricular nodal pathways was investigated.
Relationship between onset age and hearing loss of 396 ears in patients with chronic otitis media