function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amirthalingam, C.', 1],
    ['Dooley, James K.', 1],
    ['Dooley, James K. & Iwatsuki, Yukio', 1],
    ['Dooley, James K. & Kailola, Patricia J.', 1],
    ['Edwards, A. J. & Gill, A. C. & Abohweyere, P. O.', 1],
    ['Herre, Albert W. C. T.', 1],
    ['Hiramatsu, Wataru & Vinh, Chu Tien & Endo, Hiromitsu', 2],
    ['Ho, Hsuan-Ching & Shao, Kwang-Tsao', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=9)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);