Prevalence of exercise induced bronchospasm in Kenyan school children: an urban-rural comparison
L W Ng’ang’a, J A Odhiambo, M W Mungai, C M Gicheha, P Nderitu, B Maingi, P T Macklem, M R Becklake
Thorax Nov 1998, 53 (11) 919-926; DOI: 10.1136/thx.53.11.919