function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Andréfouët, Serge & Chen, Wei-Jen & Kinch, Jeff & Mana, Ralph', 1],
    ['Angulo, Arturo', 4],
    ['Angulo, Arturo & Betts, Joel T. & González-Alemán, Néstor J.', 5],
    ['Bleeker, Pieter', 2],
    ['Cavin, Lionel', 1],
    ['Conway, Kevin W.', 1],
    ['Edwards, A. J. & Gill, A. C. & Abohweyere, P. O.', 4],
    ['Golani, Daniel & Fricke, Ronald', 2],
    ['Jamandre, Brian Wade', 2],
    ['LARSON, HELEN K. & WILLIAMS, REX S. & HAMMER, MICHAEL P.', 2],
    ['Laan, Richard Van Der', 9],
    ['Laan, Richard Van Der & Eschmeyer, William N. & Fricke, Ronald', 2],
    ['Marcia Salustiano de Castro & Ana Cristina Teixeira Bonecker', 2],
    ['Smith-Vaniz, William F. & Jelks, Howard L.', 2],
    ['Spix, J. B. von & Agassiz, Jean Louis Rodolphe', 2],
    ['Other (14)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=55)',
    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);