function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ccagas, Carogina Romeiro Fernandes & Bukauskaitė, Dovigė', 1],
    ['Chavatte, Jean-Marc & Okumura, Chiharu & Landau, Irène', 2],
    ['Karadjian, Grégory & Martinsen, Ellen & Duval, Linda', 1],
    ['Križanauskienė, Asta & Iezhova, Tatjana A. & Palinauskas, Vaidas', 1],
    ['Mantilla, Juan S. & Gonzalez, Angie D. & Lotta, Ingrid A.', 1],
    ['Paperna, Ilan & Keong, Malcolm Soh Chu & May, Charlotte Yap Aye', 13],
    ['Peirce, M. A. & Adlard, R. D.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);