(a) From the start date of this agreement until February 29, 2016, April agrees, as a joint and primary oblig or of Participating Patients, to make payment to the Hospital by wire transfer within a yearly average of 45(forty-five) days of receipt of a final claim invoice. From March 1, 2016 onward, April agrees, as a joint and primary oblig or of Participating Patients, to make payment to the Hospital by wire transfer within a yearly average of 30 (thirty) days of receipt of a final claim invoice Upon April’s failure to make such payment, the Hospital shall be entitled to directly charge the relevant Participating Patients, or to demand them to make payment to the Hospital in cash and/or by credit card, in any manner as the Hospital may deem appropriate.