function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Du, Jing & Hao, Bo & Xue, Wanqi & Zhang, Chuntian', 6],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['LÖWENBERG-NETO, PETER & DE CARVALHO, CLAUDIO J. B.', 21],
    ['Patitucci, Luciano Damián & Mulieri, Pablo Ricardo', 2],
    ['Pont, Adrian C.', 5],
    ['Pérez, Sandra & De Carvalho, Claudio J. B.', 4],
    ['Schlüsslmayr, Gerhard', 2],
    ['Sorokina, Vera S. & Pont, Adrian C.', 2],
    ['Wang, Yameng & Li, Wenliang & Li, Xin & Yang, Ding', 2],
    ['Xue, Wan-Qi & Tian, Xu', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=47)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);