Objective Primary ciliary dyskinesia (PCD) is a relatively rare genetic disorder that affects
approximately 1 in 20,000 people. Approximately 50 genes are currently known to cause PCD. …

Objective: A prospective multicentre study was conducted to elucidate the causes of chronic
cough in Japan. Methodology: All consecutive and unselected patients complaining of …

Background Ciliary beat frequency (CBF) is crucial in mucociliary clearance. High-speed
video analysis (HSVA) is commonly used to measure CBF but lacks standardization. We …

Background Primary ciliary dyskinesia (PCD) is a rare genetic disorder caused by functional
impairment of cilia throughout the body. The involvement of copy number variation (CNV) in …

Primary ciliary dyskinesia (PCD) is a genetic disease with chronic airway infection and
inflammation caused by ciliary ultrastructural defects and impairment in ciliary function. We …

Objective: The aim of this study was to determine the utility of dynamic-ventilatory digital
radiography (DR) for pulmonary function assessment in patients with airflow limitation. Methods: …

Background and objective: Atopic cough (AC) is an established clinical entity in Japan, in
which patients present with a chronic persistent non‐productive cough. Exhaled nitric oxide (…

The coronavirus disease 2019 (COVID-19) pandemic is a global public health emergency
that requires the immediate implementation of control measures. COVID-19 vaccines help …

Background Chronic cough is one of the most common symptoms of respiratory diseases and
can adversely affect patients’ quality of life and interfere with social activities, resulting in a …

Cough variant asthma is recognized to be a precursor of asthma or preasthmatic state
because nearly 30% patients with cough variant asthma develop typical asthma within several …