function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barševskis, Arvīds & Janovska, Marina & Aksjuta, Kristīna', 1],
    ['Bouchard, Patrice & Bousquet, Yves & Davies, Anthony E.', 1],
    ['Broun, Thomas', 1],
    ['Champion, George C.', 1],
    ['Gotoh, Hiroki & Lavine, Laura C.', 1],
    ['Jaskula, Radomir & Coso, Denis & Tamutis, Vytautas', 2],
    ['Latreille, Pierre André', 1],
    ['Majka, Christopher G.', 5],
    ['Pollock, Darren', 1],
    ['Powell, Gareth S. & Brattain, R. Michael & Holland, Jeffrey D.', 4],
    ['Sharp, David', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);