function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albuquerque, Maria da Natividade & Campos-Creasey, Lúcia S.', 2],
    ['Alitto, Renata A. S. & Bueno, Maristela L.', 3],
    ['Borges, Michela & Amaral, Antonia C. Z.', 1],
    ['Fatemi, Yaser & Stöhr, Sabine', 3],
    ['Gondim, Anne I. & Alonso, Carmen & Dias, Thelma L. P.', 2],
    ['Stöhr, Sabine', 1],
    ['Stöhr, Sabine & Çinar, Melih Ertan & Dagli, Ertan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);