I want to to know If My son has kal sarpa dosh?

My son ABC 's birth place Kolkata. I want to to know -
1. If he has kal sarpa dosh ?
2. How it will effect my son's life & luck in comparison with position of other Planets ?
3. what is the procedure of Kal Sarpa puja,
4. Is the remedy permanent or temporary ?

Thanks and Regards
From XYZ

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