All patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consent (patient assent is also recommended when applicable according to each institution�s policy)Xx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consent; assent, when appropriate, will be obtained according to institutional guidelinesXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXEach patient�s parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consent.Xx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consent; assent, when appropriate, will be obtained according to institutional guidelinesXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xXAll patients and/or their parents or legal guardians must sign a written informed consentXx_NEWLINE_xX