In Brussels and in Paris, I have been director (or codirector, according to the epochs) of the " Habilitations à diriger des Recherches [HDRs] " or of the " Agrégations de l'Enseignement Supérieur en Médecine " and/or of the appointments as " médecins des hôpitaux " or similar degrees/positions of Dr. Christine BONNIER, Dr. Anne DE VOLDER, Prof. Gérard FERRIERE, Dr. Jean-François GADISSEUX, Prof. Yves GILLEROT, Prof. André GOFFINET, Dr. Pierre GRESSENS, Dr. Hazim J. KADHIM, Prof. Stéphane MARRET, Prof. Jean-Paul MISSON, Dr. Marie-Cécile NASSOGNE, Dr. Christian RICHELME, Prof. Peter van den BERGH, Prof. Kenou van RIJCKEVORSEL, Dr. Anne VAN HOUT. All these colleagues (quoted in alphabetical order) reached high levels of expertise and responsabilities. The recent " HDR " of Dr. Hélène OGIER de BAULNY, " médecin des hôpitaux " since many years, was for her an overdue step, based on exceptional achievements performed well before my moving to Paris.

During the 27 years I have been director (or codirector with Gilles Lyon, according to the epochs) of the Pediatric Neurology and Developmental Neurosciences Center at UCL-Belgium, we appointed several consecutive " Board of Directors" to help us in our duties of " chiefs executive officers " of the Pediatric Neurology and Developmetal Neurosciences Center. Cited by alphabetical order, Dr. Marie-Claude BELPAIRE-DETHIOU, Dr. Christine BONNIER, Prof. Gérard FERRIERE, Dr. Jean-François GADISSEUX, Prof. François VAN HOOF, Dr. Guy WILLEMS were members of such an executive board, shared the responsability and they helped so much to develop the UCL Pediatric Neurology and Developmental Neuroscience Center.

Other colleagues were directors of programs in our center (several of them were also members of the board of directors already mentioned) ; among them, also cited by alphabetical order, Dr. Christine BONNIER (Child Abuse), Dr. Anne DE VOLDER (positron emission tomography PET), Prof. Baudouin FRANCOIS (metabolism), Prof. Gérard FERRIERE (neuromuscular unit and rehabilitation), Dr. Jean-François GADISSEUX (Developmental Neurobiology), Prof. André GOFFINET (Developmental Neurobiology and, later, also the Positron Emission Tomography Program), Dr. Pierre GRESSENS (Developmental Neurobiology), Dr. Hazim KADHIM (neuropathology), Dr. Maggy RUCQUOY-PONSAR (epilepsy), Dr. Xavier SCHLÖGEL (rehabilitation of cerebral palsy), Dr. Jorge SERRANO (pediatric neuropsychiatry), Prof. François VAN HOOF (metabolism), Dr. Anne VAN HOUT (neuropsychology), Dr. Guy WILLEMS (neuropsychology). The contributions of these directors of programs has also been crucial.

In addition to appointments of visiting professors for short periods, on our proposal, several foreign colleagues have been appointed professors in our academic staff at UCL for long periods between 1969 and 1995 : Pierre LANDRIEU, from Paris, as maître de conférences ; Josette MANCINI, from Marseilles, as maître de conférences ; Henri METZ, from Luxembourg, as professor.

I wish to cite, also in alphabetical order, other colleagues (not already cited in the previous paragraphs) who trained, for variable periods, in the clinical and research center created at the UCL-Belgium and jointly operated by Gilles LYON and by myself or by myself (according to the epochs). Many of them became later " HRDs " or " Professors " or " Médecins des Hôpitaux " or equivalent appointments in other institutions in France, in Belgium or in other countries : Miriam Alarcon, Catherine Allaire, Fernando Arita, Anne Beaugerie-Perot, Patrick Berquin, Alidor Beya-Tschimanga, Vinciane Boon, Pedro Cabral, Maria-Theresa Celle, Abla Chalabi-Benabdallah, Dominique Charlier-Mikolajcack, Roberta Cilio, Philippe Compagnon, Raul Cordoba, Catherine Coupez, Pierre Daems, Anne d'Alcantara, Luc Dejaegher, Elvio Della Giustina, Talvany De Oliveira, Lutgard Derijdt, Michèle Deschamps-Robbe, Michel Deschamps, Marc D'Hooghe, Anwar Dudin, Mohamed El Wahabi, Tahel Etzion, M. Teresa Garcia-Silva, F. Geraldo Fernandes Xavier, Thérèse Ghislain-Carpentier, Anne Gautier, Antoinette Gelot-Barnabe, Sanda Giurgea-Houben, Véronique Godding, Catherine Godfraind, Lutgarde Goossens, Serge Gosseye, Nelson Guerchon, Brigitte Henrot, Maria M. Herrero, Patricia Jetten, A. Kesman, Michel Kruth, Patrice Laloux, Pierre Landrieu, Abdelmajid Larnaout, Eric Le Galloudec, Bernard Legrand, Marianne Lemoine, Damien Lerminiaux, Joël Leroy, Francesco Lopera, Francine Lys, Maria Joaquina Marques-Dias, Lionel Mathelier, Alicia Mauro, Michèle Mayer, Elie Mbonda, Tomas Mesa Latorre, René Metz, Najoua Miladi, Kimiyo Mogami, Marc Mortier, Marleen Moonen, Françoise Morsomme, Jacques Motte , Richard Mukendi, Marc Naulaerts, Théo Ntihinyurwa, Joaquin Pena, Marcia Pradella, Gerald Raymond, Anne Renders, Jorge Rodriguez, Alfonso Romano, Victor Ruggieri, Ernesto San Julian, Emmanuel Scalais, Xavier Schlögel, Aziza Sefta-Brahim, Marteen Senepart, Mourad Souissi, Dominique Staudt-Fagnart, Alexandre Stevens, René Stevens, Kirsten Stollhoff, Jean-Marc Sussan, Lalla Tamisari, Marc Tardieu, Theresa Temudo, Frieda Thys, Chahnez Triki-Charfi, Agnès Tzerkezoglou, Louis Vallée, Marc Van Bellinghen, Rudy Van Coster, Ines Vandenbussche-Vandenbogaert, M. Vandeputte-Denayer, Edwige Veneselli, Catherine Wetzburger, Johanna Wieme-Bouten, Guy Willems, Anne Wintgens. As already mentioned, many of these colleagues reached important positions in other centers at or around UCL, or elsewhere in Belgium, or in France or in other countries. I shall pay elsewhere the tribute due to other coworkers and visitors who stayed for a while in the pediatric neurology service I created in Leuven (Louvain), which moved later in Brussels (as explained above) at the time when Gilles Lyon joined it, and in the service created at Robert-Debré in Paris on September 1st, 1995.