function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Axelrod, H. R.', 1],
    ['Bailey, R. G.', 1],
    ['Boulenger, George Albert', 17],
    ['Chabanaud, P.', 1],
    ['Chan, Jeffery C. F. & Tsang, Alphonse H. F. & Yau, Sze-man', 1],
    ['Daget, J.', 2],
    ['Günther, Albert Charles Lewis Gotthilf', 3],
    ['John P. Friel & Thomas R. Vigliotta', 2],
    ['Musschoot, Tobias & Lalèyè, Philippe', 2],
    ['Pellegrin, J.', 4],
    ['Peters, Wilhelm Carl Hartwig', 2],
    ['Poll, M.', 10],
    ['Skelton, P. H. & White, P. N.', 2],
    ['Vaillant, L. L.', 5],
    ['Vinciguerra, Decio', 2],
    ['Other (18)', 18]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=73)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);