function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Faulwetter, Sarah & Simboura, Nomiki & Katsiaras, Nikolaos', 4],
    ['Garcia-Garza, Maria E. & de Leon-Gonzalez, J. A.', 2],
    ['Garcia-Garza, Maria Elena & de Leon-Gonzalez, Jesus Angel', 1],
    ['Hutchings, P. & Peart, R.', 3],
    ['Mikac, Barbara', 1],
    ['Nishi, Eijiroh & Matsuo, Kanako & Kazama-Wakabayashi, Maki', 1],
    ['Nogueira, João Miguel De Matos & Ribeiro, William M. G.', 2],
    ['Parapar, Julio & Palomanes, Verónica & Helgason, Gudmundur V.', 2],
    ['Wong, Eunice & Hutchings, Pat', 2],
    ['Zhang, Jinghuai & Hutchings, Pat', 6],
    ['Zhang, Jinghuai & Hutchings, Pat & Qiu, Jian-Wen', 4],
    ['Zhang, Jinghuai & Zhang, Yanjie & Qiu, Jian-Wen', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);