function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bahia, Juliana & Padula, Vinicius & Delgado, Marlon', 1],
    ['Bahia, Juliana & Padula, Vinicius & Lavrado, Helena Passeri', 2],
    ['Gammoudi, Mehrez & Ahmed, Raja Ben & Tekaya, Saïda', 1],
    ['Gammoudi, Mehrez & Garbouj, Myriam & Egger, Bernhard', 1],
    ['Liu, Hai-Long & Lin, Da-Hao & Wang, An-Tai & Hu, Zhang-Li', 1],
    ['Marquina, Daniel & Aguado, M. Teresa & Noreña, Carolina', 3],
    ['Norena, Carolina & Marquina, Daniel & Perez, Jacinto', 1],
    ['Noreña, Carolina', 1],
    ['Ramos-Sánchez, Mariela & Carrasco-Rodríguez, Dahani S.', 2],
    ['Rodríguez, Jorge & Hutchings, Pat A. & Williamson, Jane E.', 2],
    ['Soutullo, Patricia & Cuadrado, Daniel & Noreña, Carolina', 1],
    ['Tsuyuki, Aoi & Kajihara, Hiroshi', 1],
    ['Tsuyuki, Aoi & Oya, Yuki & Kajihara, Hiroshi', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=18)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);