Variation in pitch and quality of S1, S2

2018-03-212018-03-21Unknownhttp://hdl.handle.net/2152.3/7024A hand drawn illustration labeled Variation in pitch and quality of S1, S2.S1S2Variation in pitch and qualitycardiac auscultationutmbdrawingDr. William E. ThorntonSpace MedicineVariation in pitch and quality of S1, S2