function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barboza, Gloria E.', 1],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 1],
    ['Filipowicz, Natalia & Nee, Michael H. & Renner, Susanne S.', 1],
    ['Lee, Jong-Won & Yun, Ho-Geun & Hwang, Tae Young & Kim, Kyungmin', 1],
    ['Lehnebach, Carlos A.', 2],
    ['Monro, Alex K.', 8],
    ['Provance, Mitchell C. & Sanders, Andrew C.', 1],
    ['Rigo, Attila & Malatinszky, Akos & Barina, Zoltan', 6],
    ['Verloove, Filip', 1],
    ['Wagner, Warren L. & Wagner, Anthony J. & Lorence, David H.', 11],
    ['de Medeiros, Maria Claudia M. P. & Lohmann, Lucia G.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=35)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);