function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Denny, Henry', 1],
    ['Gonza ́ Lez-Acun, Daniel A. & Palma, Ricardo L.', 14],
    ['Ilieva, Mihaela', 10],
    ['Kellogg, V. L. & Chapman, B. L.', 2],
    ['Kellogg, Vernon L.', 1],
    ['Kuabara, Kamila M. D. & Valim, Michel P. & Silveira, Luís Fábio', 6],
    ['Nasser, Mohamed & Al-Ahmed, Azzam & Shobrak, Mohammed', 2],
    ['Naz, Saima & Najer, Tomas & Gustafsson, Daniel R.', 5],
    ['Naz, Saima & Sychra, Oldrich & Rizvi, Syed Anser', 2],
    ['O. D., Malysheva & A. V., Zabashta & O. O., Tolstenkov', 6],
    ['Ošlejšková, Lucie & Krištofík, Ján & Trnka, Alfréd', 13],
    ['Palma, Ricardo L. & Peck, Stewart B.', 7],
    ['Piaget, E.', 2],
    ['Reeves, Will K. & Durden, Lance A. & Ritzi, Christopher M.', 1],
    ['Sánchez-Montes, Sokani & Colunga-Salas, Pablo', 14],
    ['Other (1)', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=87)',
    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);