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Reig R, Hermida M, Fontanals D, Lite J, Martí C, Morera MA, Roy C.Reig R, et al. Among authors: roy c.Med Clin (Barc). 1991 May 18;96(19):727-9.Med Clin (Barc). 1991.PMID: 1875749Spanish.
Tirado M, Baró MT, Hermida M, Morta M, Alia C, Roy C.Tirado M, et al. Among authors: roy c.Enferm Infecc Microbiol Clin. 1992 Jun-Jul;10(6):355-9.Enferm Infecc Microbiol Clin. 1992.PMID: 1391019Spanish.
Hermida M, Gibert I, Barbé J, Roy C.Hermida M, et al. Among authors: roy c.Enferm Infecc Microbiol Clin. 1990 Oct;8(8):501-4.Enferm Infecc Microbiol Clin. 1990.PMID: 2095262Spanish.