function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Allsopp, Peter G.', 6],
    ['Bhandari, Pamita & Sendri, Nitisha & Devidas, Shinde Bhagatsing', 1],
    ['Chakraborty, Kajal & Kizhakkekalam, Vinaya Kizhakkepatt', 1],
    ['Evenhuis, Neal L. & O’Hara, James E. & Pape, Thomas', 1],
    ['Lee, Jae-Yun & Jeong, Yun-Seok & Kim, Pil Soo', 1],
    ['Li, Yong & Wang, Sheng-kun & Xue, Han & Chang, Ju-pu', 2],
    ['Yang, You-Jian & Zhang, Yan-Ting & Chen, Guo-Qiang & Cheng, Dan', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=13)',
    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);