Linda Pedraza

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Critical parts of the software development life cycle are concerned with eliciting, understanding, and managing requirements. Though the literature on this subject dates back for several decades, practicing effective requirements development remains a current and challenging area. Some projects flourish with a requirements development process (RDP) that is(More)
BACKGROUND Gonyautoxin are phycotoxins, whose molecular mechanism of action is a reversible block of the voltage-gated sodium channels at axonal level, impeding nerve impulse propagation. OBJECTIVE To evaluate clinical efficacy of gonyautoxin in the treatment of patients with chronic tensional-type headache. METHODS Open trial from September 2004 to(More)
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