Our thanks to all the persons and institutions that helped with participant recruitment and follow-up and those that allowed us the use of their premises to conduct the interviews; to Marta Franco of the Agencia Antidroga of the Community of Madrid; and to all those who agreed to participate in ITÍNERE and formed part of the study sample.
A Marta Franco, de la Agencia Antidroga de la Comunidad de Madrid. A todas las personas que aceptaron participar en el Itínere y formar parte de la muestra de este estudio.