function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Alexandre Oliveira De & Guerrazzi, Maria Cec Lia', 1],
    ['D\'Acoz, Cédric D\'Udekem & Degrave, Sammy', 1],
    ['Grave, De & Chan, Tin-Yam & Okuno, Junji', 1],
    ['Herrera-Barquín, Hiram & Leija-Tristán, Antonio', 1],
    ['Paul\'son, Otton Mickhaĭlovich', 1],
    ['Soledade, Guidomar O. & Fonseca, Mytalle S.', 1],
    ['Terossi, Mariana & Almeida, Alexandre O. & Buranelli, Raquel C.', 2],
    ['Xu, Peng & Li, Xin-Zheng', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=10)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);