Health risk assessment of trace metals in the vicinity of an abandoned mercury mine in Puerto Princesa City, Philippines by Samaniego, Jessie O., Gibaga, Cris Reven L., Tanciongco, Alexandria M., Devanadera, Ma. Catriona E., Paro, Fevi Rose C., Adil, Jihan H., Montano, Mariel O., Quierrez, Rico Neil M., Gutierrez, Alaine Claudette S.