function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 12],
    ['Aonuma, Y. & Yoshino, Tetsuo', 2],
    ['Chen, I-Shiung & Shao, Kwang-Tsao & Chen, Jeng-Ping', 3],
    ['Du, Jianguo & Loh, Kar-Hoe & Hu, Wenjia & Zheng, Xinqing', 3],
    ['Golani, Daniel & Bogorodsky, Sergey V.', 1],
    ['Herre, Albert W. C. T.', 1],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 2],
    ['Mohlmann, Mark S. & Munday, P. L.', 1],
    ['Mohlmann, Mark S. & Randall, John Ernest Dr.', 2],
    ['Polunin, N. V. C. & Lubbock, Roger', 4],
    ['Randall, John Ernest Dr.', 5],
    ['Randall, John Ernest Dr. & Earle, John L.', 1],
    ['Smith, J. L. B.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=38)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);