[1] Hop Cochin, AP HP, CRCM Serv Pneumol, F-75679 Paris 14, France
[2] Hop Trousseau, AP HP, CRCM Serv Pneumol Pediat, F-75571 Paris, France
[3] Hop Necker Enfants Malad, AP HP, CRCM Serv Pediat, Paris, France
[4] Hop Robert Debre, AP HP, CRCM Serv Pediat, F-75019 Paris, France