Submitted on: 30 January 1999.
Revised on: 14 March 1999.
Accepted on: 04 April 1999.
Revista Medica Clinica Las Condes
Submitted on: 02 May 2013.
Revised on: 29 May 2013.
Accepted on: 04 June 2013.
Revista Medica Clinica Las Condes
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Submitted on: 22 November 2021.
Revised on: 04 January 2022.
Accepted on: 16 January 2022.
Revista Medica Clinica Las Condes
Submitted on: 23 May 2003.
Revised on: 13 June 2003.
Accepted on: 25 June 2003.
Revista Medica Clinica Las Condes
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