Apostrophe placement..

Question

He had 3 courses’ of chemo-radiation and was felt to be free of disease after completion of that treatment. He had moderate neutropenia and anemia afterward’s. He was referred for follow up radiation therapy and has been receiving this approximately 6 months’. Because of concern about respiratory problems, belomycin was discontinued from the protocol after several dose’s.

Answer 1

All of those apostrophes are wrong.

http://www.grammarbook.com/punctuation/apostro.asp

Answer 2

There is/are positive bowel sounds.