function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['De, Nicole J.', 1],
    ['Goodwin, Claire & Brickle, Paul', 2],
    ['Goodwin, Claire E. & Berman, Jade & Hendry, Katharine R.', 1],
    ['Göcke, Christian & Janussen, Dorte', 3],
    ['Hajdu, Eduardo & Desqueyroux-Faúndez, Ruth', 2],
    ['Lehnert, Helmut & Stone, Robert & Heimler, Wolfgang', 2],
    ['Lehnert, Helmut & Stone, Robert P.', 6],
    ['Morozov, Grigori & Sabirov, Rushan Mirzovich', 1],
    ['Ott, B. & Reiswig, H. M. & Harbo, R.', 2],
    ['Ott, Bruce & Reiswig, Henry M.', 1],
    ['Schejter, Laura & Cristobo, Javier & Ríos, Pilar', 2],
    ['Schmidt, Eduard Oscar', 2],
    ['Topsent, Émile', 1],
    ['Van Soest, Rob W. M.', 2],
    ['Van, Rob W. M.', 1],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=30)',
    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);