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    • Deprecated function: Return type of DatabaseStatementBase::execute($args = [], $options = []) should either be compatible with PDOStatement::execute(?array $params = null): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2246 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
    • Deprecated function: Return type of DatabaseStatementEmpty::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
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    • Deprecated function: Return type of DatabaseStatementEmpty::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).
    • Deprecated function: Return type of DatabaseStatementEmpty::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in require_once() (line 2348 of /var/www/webmd/apps/mdedge/htdocs/includes/database/database.inc).

    Charlotte Lasenna, MD

    Article

    Serum Ferritin Levels: A Clinical Guide in Patients With Hair Loss

    Author:
    Donglin Zhang, BA
    Charlotte Lasenna, MD
    Bridget E. Shields, MD

    In this article, we review the structure and function of ferritin, and we provide a guide for clinical use.

    • Read More

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    • MDedge Home
    • Cardiology
    • Clinician Reviews
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    • Obstetrics And Gynecology
    • Pediatrics
    • Psychiatry
    • Pulmonology
    • Rheumatology
    • Surgery