Extended-cycle birth control pills involve taking one “active” pill daily for around 84 days before pausing for a 7-day break for withdrawal bleeding. After the break, the person begins taking the ...
Spirax Sarco released a new control valve range, SPIRA-TROL, in 6- and 8-inch sizes and with more control options. The company says the valves are easy to maintain and do not require any special ...
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