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2. Clinical study of WAL801CL (epinastine) on adult bronchial asthma-multi-centre double-blind study vs ketotifen fumarate;Takishima;Rinsho Iyaku,1992
3. Clinical evaluation of N-5 in adult bronchial asthma-multi-centre double-blind study;Shioda;Jap J Pediatrics,1978
4. Clinical of terfenadine in bronchial asthma—comparison with ketotifen in a multi-centre double-blind study;Makino;Rinsho Iyaku,1988
5. International drug price comparison between Japan and four Western countries;Hama;Jap J Clin Pharmacol Ther,1995