function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Benetti, Cesar João & Hamada, Neusa', 2],
    ['Bilton, David T.', 1],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Hájek, Jiří & Fikáček, Martin', 9],
    ['Hájek, Jiří & Yoshitomi, Hiroyuki & Fikáček, Martin', 3],
    ['Perkins, Philip D. & Bergsten, Johannes', 9],
    ['Pinto, Valeria Araújo Braule', 1],
    ['Sampaio, Brunno Henrique Lanzellotti & Ferreira-Jr, Nelson', 7],
    ['Takiya, Daniela Maeda & Santos, Allan Paulo Moreira', 10]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=43)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);