Integrating clinical and epidemiological data on allergic diseases across birth cohorts: A harmonization study in the mechanisms of the development of allergy project by Marta Benet, Richard Albang, Mariona Pinart, Cynthia Hohmann, Christina G. Tischer, Isabella Annesi-Maesano, Nour Baiz, Carsten Bindslev-Jensen, Karin C. Lodrup Carlsen, Kai-Hakon Carlsen, Lourdes Cirugeda, Esben Eller, Maria P. Fantini, Ulrike Gehring, Beatrix Gerhard, Davide Gori, Eva Hallner, Inger Kull, Jacopo Lenzi, Rosie R.C. McEachan, Eleonora Minina, Isabelle Momas, Silvia Narduzzi, Emily Petherick, Daniela Porta, Fanny Ranciere, Marie Standl, Maties Torrent, Alet H. Wijga, John Wright, Manolis Kogevinas, Stefano Guerra, Jordi Sunyer, Thomas Keil, Jean Bousquet, Dieter Maier, Josep M. Anto, Judith Garcia-Aymerich