A community-based epidemiological study of acne vulgaris in Hong Kong adolescents. Yeung C K,Teo L H,Xiang L H,et al. Acta Dermato Venereologica . 2002
A community-based epidemiological study of acne vulgaris in Hong Kong adolescents. Yeung C K,Teo L H,Xiang L H,et al. Acta Dermato Venereologica . 2002