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2. Payment gateway - Wikipedia

   en.wikipedia.org/wiki/Payment_gateway

   A payment gateway is a merchant service provided by an e-commerce application service provider that authorizes credit card or direct payment processing for e-businesses, online retailers, bricks and clicks, or traditional brick and mortar. [1] The payment gateway may be provided by a bank to its customers, but can be provided by a specialised ...

3. Unified Payments Interface - Wikipedia

   en.wikipedia.org/wiki/Unified_Payments_Interface

   Unified Payments Interface (UPI) Unified Payments Interface, commonly referred to as UPI, is an Indian instant payment system as well as protocol developed by the National Payments Corporation of India (NPCI) in 2016. The interface facilitates inter-bank peer-to-peer (P2P) and person-to-merchant (P2M) transactions.

4. Payment service provider - Wikipedia

   en.wikipedia.org/wiki/Payment_service_provider

   Payment service provider. A payment service provider ( PSP) is a third-party company that allows businesses to accept electronic payments, such as credit card and debit card payments. PSPs act as intermediaries between those who make payments, i.e. consumers, and those who accept them, i.e. retailers. [1]

5. Prostate-Specific Antigen: Normal Ranges by Age - Healthline

   www.healthline.com/health/prostate-cancer/...

   PSA levels can vary based on your age. There’s no official guidance on what a typical range is and what the upper limit should be for further testing. The recommended upper limits for PSA levels ...

6. Primary Sclerosing Cholangitis: Symptoms, Causes, Treatment

   www.webmd.com/digestive-disorders/primary...

   PSC develops slowly. You may have it for years before you notice any symptoms. Some of the signs are: Fatigue. Itchy skin. Yellowish skin and eyes caused by a condition called jaundice. As PSC ...

7. When to worry about premature ventricular contractions (PVCs)

   www.healthline.com/health/arrhythmia/when-to...

   But sometimes you may need to see a doctor. A premature ventricular contraction (PVC) is a heartbeat that starts in a different part of the heart than usual. A PVC (or lots of PVCs) can make you ...

8. Penis Stretching: 5 Exercises for Length and Girth - Healthline

   www.healthline.com/health/mens-health/penis...

   Grip the head of your penis. Pull your penis upward, stretching it out for about 10 seconds. Pull your penis to the left for another 10 seconds, then to the right. Repeat these steps once or twice ...

9. List of online payment service providers - Wikipedia

   en.wikipedia.org/wiki/List_of_online_payment...

   The following is a list of notable online payment service providers and payment gateway providing companies, their platform base and the countries they offer services in: (POS -- Point of Sale ) Company