C J Watkins, Y Sittampalam, D C Morrell, S R Leeder, E Tritton
Watkins C J, Sittampalam Y, Morrell D C, Leeder S R, Tritton E.
Patterns of respiratory illness in the first year of life.
Br Med J (Clin Res Ed) 1986; 293 :794
doi:10.1136/bmj.293.6550.794